First, write the number directly.

50- 16+ 1 1= 6×7-22= 3×8÷4= 27+ 13- 17=

12- 1× 1= 0×2+8= 90-( 14+ 17)=

20+(90- 10)= ( 14+7)÷3= (60-6)÷6=

fill (up) a vacancy

1, in the formula with brackets, () must be calculated first.

2. The following is the statistics of the number of track and field teams. Please complete the following table (unit: person).

Number of boys in the project, total number of girls

Long jump 20 is less than that of boys 12.

Running is three times that of girls.

There are four people less than girls in the high jump.

Third, multiple choice questions

What's the difference between 1.36 and 24 minus 12? The correct formulation is ().

A.36+ 12-24

2. What is the quotient of16 and 9 divided by 5? The correct formulation is ().

a . 16+9÷5 b .( 16+9)÷5 c .( 16-9)÷5

Fourth, solve the problem.

1. There are 34 volleyballs in the school, 14 lent to students, and 8 were returned by students. How many volleyball balls are there now?

2. Xiaojun wants to read a story book with 100 page. He read 25 pages on the first day and 15 pages on the second day. How many pages are left? (Answer in two ways)

Students take part in tree planting activities. There are 5 groups in Grade Two, 8 people in each group and 80 people in Grade Three. How many people take part in tree planting activities in Grade Two?

4.8 The students made flowers, and each made 5 flowers and gave them to the kindergarten children 18 flowers. How many flowers are left?

Grandpa Wang has eight chickens, and the number of ducks is four times that of chickens. How many chickens and ducks does Grandpa Wang have?

6. The students planted 60 Chinese rose flowers and 4 rows of chrysanthemums, 8 in each row. How many kinds of roses are there than chrysanthemums?

7. Liang Xiao's mother bought tickets for the park, including adult 7 yuan, child 4 yuan, three adult tickets and one child ticket. How much does mom want?

Division in table (1)

Fill in the blanks.

1. Divide 12 into 6 parts, each part is (). List the formula: () ⊙ () = ().

2.25 ÷ 5 = () is pronounced as () divided by (), which means that () is divided into () parts on average, and each part is (), that is, () contains ().

3. 12 pears are put on four plates on average. Please write the multiplication formula and division formula.

Multiplication formula: (), ()

Division formula: (), ()

4. Look at the picture and fill in () completely.

The formula () ⊙ () = () means: divide () into () parts equally, and each part is ().

5.

Addition formula: _ _ _ _ _ _ _ _ _ _ _

Multiplication formula: _ _ _ _ _ _ _ _ _ _ _

Division formula: _ _ _ _ _ _ _ _ _ _ _

6. Divide 12 into 4 parts. How many are there in each part? 12÷( )=( )

Divide 12 into three parts. How much is each part? 12÷( )=( )

7. There are () flowers in this painting.

The format is: ().

8. Fill in the form completely according to the relationship between the numbers.

9. fill in ">", "

5 ( ) 20÷5 30÷6( ) 6 40( )6×5

12÷3 ( ) 5 6( )36÷6 20( )4×5

Second, the oral calculation:

4×2= 4×3= 5×2= 8÷2= 12÷3= 10÷5=

8÷4= 12÷4= 10÷2= 3÷3= 4÷2= 8÷4=

12÷6= 12÷2= 9÷9= 6÷3= 10÷2= 9÷3=

6÷6= 24÷6= 30÷5= 16÷4= 3×4= 5×5=

6÷3= 10÷5= 12÷4= 5×3= 5×6= 6×4=

15÷3= 30÷6= 24÷4= 15÷5= 30÷5= 24÷6=

Third, the column calculation

(1) How many 3s are there in 24?

(2) The dividend is 18 and the divisor is 3. What is the quotient?

(3) What is15 divided by 5?

(4) Divide 24 into 4 parts on average. How much is each part?

Fourth, solve the problem.

(1) The central store sold 42 washing machines on the first day, six times the number sold the next day. How many units were sold the next day?

(2) There are 24 girls in Class Two (1), 6 of whom have participated in table tennis interest classes. How many times are there people who haven't participated in table tennis interest classes than those who have?

one

Please move 1 square at a time, 7 times in total, and exchange the positions of butterflies and birds along the straight line shown below.

one

1. Points to and tracks angles in the graph.

2. Help small animals find their homes, please contact them.

Unit test 1

1. Let's see who is quick to whom.

36+7= 24÷8= 12÷2=

56-8= 7×5= 4×5=

42÷6= 20÷5= 76+7=

5×9= 40-7= 5×5=

18÷6= 14÷7= 7+47=

38-6= 6×9= 63÷7=

2 1÷3= 2×8= 5÷5=

2. fill in ">", "

( 1) 1×9○ 10 (2)36÷4○9

(3)5×9○44 (4)50○98-40

(5)63÷7○ 10 (6) 15+ 15○30

(7)27÷3○8 (8)20○5×3

(9)56÷8○8 ( 10)3○20÷5

( 1 1)8×4○35 ( 12) 18÷9○2

( 13)74-8○62 ( 14)36÷6○6

( 15)68+8○70 ( 16)8 1÷9○ 10

3. Fill in the appropriate numbers in the blanks.

4. multiple choice questions. (Draw √ under the correct answer)

Formula with (1) coefficient of 5:

5×6 6×5 5÷5 10÷5

( ) ( ) ( ) ( )

(2) The formula of the product is 8:

4+4 2×4 16÷2 16-8

( ) ( ) ( ) ( )

(3) The divisor is 6:

6÷2 4×6 12÷6 6×2

( ) ( ) ( ) ( )

(4) The dividend is 9:

9÷3 18÷9 9×2 2×9

( ) ( ) ( ) ( )

5. Calculate with a hard formula.

( 1)35÷7 (2) 15÷3 (3)8×6

(4)28÷7 (5)7+26 (6)92-64

6. Fill in a division application problem according to the picture and calculate in parallel.

Title:

Column calculation:

7. Formula calculation.

(1) What's the difference between 36 and 63?

(2) One factor is 7 and the other factor is 5. What is the product?

(3) Divide 56 into 8 parts. How much is each part?

(4) How many 9s are there in 72?

(5) What is the quotient of 28 divided by 7?

(6) What is 7 times 6?

(7) The number of A is 40, the number of B is 8, and how many times is A?

8. Application questions.

(1) Wang Gang writes three strokes every day. How many times does he write Chinese a week (7 days)?

(2) Kindergarten bought 64 bottles of Robust milk and 8 bottles of Sprite. How many times have these bottles of Robust milk been bought?

(3) There are 6 pots of chrysanthemums on campus, and the number of Chinese rose flowers is four times that of chrysanthemums. How many cans are there?

(4) Complete the recalculation of application problems.

(1) There are five-line trees, _ _ _ _ _ _ _ _ _ _, one * * *, how many trees are there?

(2) Planting 5 rows of 35 trees, _ _ _ _ _ _ _ _?

Unit test 2

1.

2. Fill in the blanks with the pictures and write the formula.

( 1)

() ⊙ () = () means: _ _ _ _ _ _ _ _ _ _ _ _ _.

() ⊙ () = () means: _ _ _ _ _ _ _ _ _ _ _ _ _.

3. Fill in the appropriate number in ().

4. fill in ">", "

○ ○ ○

○ ○ ○

5. What can I fill in ()?

6. Write a division formula, where the quotient of 9 is 7.

7. Fill in "+","-"or "×" and "∫" in ○.

2○9= 18 ○6 63○9+6= 13

23○ 16= 14÷2 8○ 56÷7○2=4

8. Fill in the blanks.

(1) means to divide () into () parts on average, and each part is (); It also means that there is () in (); It also means that 45 is () times that of ().

② means () () adds up to 48; This also means that () times of 8 is 48.

(3)8 is twice as much as (), and 8 is twice as much as 2 ().

(4) Both factors are 7, and the product is (); Dividend is as much as divisor, and quotient is ().

(5)

() The number of sheep is () times that of () sheep.

9. Write the formula as required.

(1) Write a four-way formula whose product is 18.

_____________ _____________ _____________ _____________

(2) Write four formulas with quotient of 5.

_____________ _____________ _____________ _____________

(3) Write four multiplication and division formulas calculated by the same formula.

_____________ _____________ _____________ _____________

10. Calculation.

( 1)

(2) Longitudinal calculation.

1 1. Text problem.

How many times is (1) 42 7?

(2) What is 9 times of 8?

(3) What is the quotient of 56 divided by 8?

(4) Divide 54 into 6 parts on average. How much is each part?

12.

(1) My brother reads 4 pages a day and finishes reading this book in 9 days. How many pages are there in this book?

(2) Distribute 24 pencils to 8 students on average. How many pencils does each student have?

(3) Each bunch of flowers has 8 flowers. How many bunches can 48 flowers tie?

(4) There are 6 classes in Senior One and Senior Two, and 4 people in each class participate in the dance troupe. How many people are there in the first grade? Later, the company added 10. How many people are there in the dance group now?

(5) Liu Hong has to make 72 flags, eight a day. How many days can it be finished? If you cook 9 noodles a day, how many days can you finish them?

(6) The cloth is 30 meters, and it took 12 meters to make a bed sheet. How many meters are left? It takes 3 meters of cloth to make a suit, and the rest of the cloth can be used to make several sets of clothes.

(7) Write a multiplication problem and answer it.

(8) Write a division application problem and answer it.

Unit test three

1. Numbers written directly.

2. Fill in the blanks.

(1) "6954" means (), and this formula can be used to calculate the multiplication formula ().

(2) Think: seven () is sixty-three, so the quotient is ().

(3)8 is () times that of 2, and 2 times that of 8 is ().

(4) Write the following formula completely.

Three () eighteen () nine seven two four () thirty six

() 6388 () 69 ()

(5)

3. Write the formula.

( 1)

( )×( )=( ) ( )÷( )=( )

( )×( )=( ) ( )÷( )=( )

(2) 6848

( )×( )=( ) ( )÷( )=( )

( )×( )=( ) ( )÷( )=( )

(3)8、9、72

( )×( )=( ) ( )÷( )=( )

( )×( )=( ) ( )÷( )=( )

4. Are the following questions correct? Tick √ for the right and × for the wrong.

(1) Use the formula for calculating sum: 3927. ()

(2) calculation, think: six, several, forty-eight. ()

(3) ( )

(4) Find four times seven, that is, find four sevens. ()

(5) ( )

5. Write the number directly.

6. Formula calculation.

(1) What is the sum of five 9s?

(2) Divide 63 into 7 parts on average. How much is each part?

(3) How many eights are there in 32?

(4) Divide 4 1 into five parts. How many parts can it be divided into?

(5) What is eight times seven?

(6) How many times is 9 54?

(7) One factor is 9 and the other factor is 8. What is the product?

(8) The dividend is 36 and the divisor is 9. What is the quotient?

7. Solve application problems.

(l)32 students line up and every four students stand in a row. How many rows can they stand?

(2) Xiaohong bought five books, each 6 yuan. How much did she spend?

(3) The teacher bought 48 skipping ropes and distributed them to 6 classes on average. How many people are there in each class?

(4) There were 6 black rabbits and 18 white rabbits in the biological group. How many times is the white rabbit?

(5) The number of track and field teams is four times that of dance teams. There are nine people in the dance team. How many people are there in the track and field team?

(6) There is a basket of balls in the gym, with 6 balls in each class. How many balls did this basket lose after five lessons?

Other issues

1.

8×( )= ( )+7=8 54÷( )=9 ( )÷( )= 1

Can you work out this figure?

3. Answer the application questions.

(1) The number of safflower is three times that of yellow flower. There are 18 red flowers. How many yellow flowers are there?

(2) A rope is 50 meters long and cut into 6 meters. How many segments can it be cut into? How many meters are left?

unit testing

1. Numbers written directly.

400+300= 5000-3000= 99+ 1=

1000- 1= 1000-240= 450+540=

100 1- 1= 999+ 1= 5600-5000=

7000+600=

2. Fill in the blanks.

(1) 10 One hundred is (), 10 One thousand is ().

There are () ten thousand in a hundred thousand miles and () ten in a thousand miles.

(2) The hundredth position on the right is () position, the fifth position on the right is () position, and the thousandth position is () position.

(3) The number 8008, counted from the right, the first digit of 8 means 8 (), and the fourth digit of 8 means 8 ().

(4) The number on hundreds of bits is 6, the number on thousands bits is 1, and the number on division bits is 0. This number is (), pronounced ().

(5)892 is bit (), the highest bit is bit (), 10000 is bit (), and the highest bit is bit ().

(6) The largest four digits of 5, 0, 3 and 9 are (), and the smallest four digits are ().

(7) Fill in the numbers in sequence.

102、____、 100、____、____97、____.

190、____、____、 160、____、____、____、 120、____、____

5000、____、____、____、7000、____、____、____、____、9500

3. Read the following questions.

3800( ) 4050( )

6009( ) 8047( )

4. Write the following questions.

(1) Two thousand six hundred writing ()

5872 Writing (Middle)

Chapter nine thousand one hundred Writing ()

Chapter four hundred and sixty-eight Writing (on)

(2) five hundred and eight ten is ()

1 thousand, 200, 3 ten, 4 one is ()

Six ones and eight thousand are ()

One million is ()

5. Fill in the numbers in □.

543 1=□+□+□+□

7560=□+□+□

2048=□+□+□

8009=□+□

3070=□+□

6. fill in ">", "

1000○999 99○ 10 1

1 1 1 1○9999 999○ 100 1

10 10○999+ 1 99○ 100- 1

100 1- 1○999+ 1 999○ 1000- 1

2020○2002+ 1 304○403- 100

7. Fill in "+","-","X" or "÷" in ○.

45○5=3○3 6○7=20○22

7○9=87○24 48○6=27○ 19

36○6=36○30 4○7=50○22

2400○5400=8000○200 8○9= 100○28

8. Arrange the following figures in descending order.

( 1) 1090 1009 1 100 1909

(2)9999 8900 9990 8909 10000

9. Write down all two digits with zeros in one place.

Write down all two digits of 5 in one place.

10. Application questions.

(1) There are 35 baskets of oranges in the fruit shop, and 65 baskets are brought in. Later, 48 baskets were sold. How many baskets of oranges are there in the fruit shop?

(2) A pair of cloth shoes costs 8 yuan, and the price of 3 pairs of cloth shoes is just enough to buy 4 pairs of sandals. How much is a pair of sandals?

(3) There are 24 boys and 8 girls in Class Two (1). The seventh student is divided into a group. He can be divided into several groups.

unit testing

Fill in the blanks.

1. 1kg =()g 1kg = 1kg =()kg。

500g+500g = () kg 2kg =1500g+() g.

2. Weight of a nickel 1g, () Weight of a nickel 10g.

3. 1 000g is more than 700g () g,1kg 300g = () g.

4.2030 kg is heavier than 2000 kg () kg, 1 bag sugar weight 1 ().

5. An apple weighs 200 grams, and () apples are 1 kg.

6. Arrange from heavy to light.

600g 1 kg 20 kg 3000g

( ) ( ) ( ) ( )

7. A barrel of oil weighs 9 kg, barrel weight 100 g, and oil weight () kg () g..

8.5500g-500g = () kg，3400g+600g = () kg。

9. The weight of a big buffalo is 499 kilograms, which is about () kilograms.

Fill in the appropriate weight unit.

A cow 250 (), a bag of washing powder 500 (), a book 500 (), an umbrella 400 (), a bag of rice 50 (), a football 200 (), a bag of milk powder 500 (), a bottle of ink () grams, a bottle of toothpaste () grams, a table tennis 3 (), a table tennis ball.

Judge whether it is true or not (mark "√" for the right and "×" for the wrong).

1. Xiaoming weighs 30 grams and can eat 50 kilograms of steamed buns at a meal. ()

2. 1 kg iron ratio1000g cotton weight. ()

3. 1 Skipping rope is 5 kg long. ()

A volleyball weighs 400kg. ()

5. Mom's height 162 cm and weight 53 grams. ()

Fourth, solve the problem.

1. A bottle of peanut oil weighs 6 kg, and Aunt Dining Hall bought 8 bottles. How heavy is a * *?

The fruit shop brought grapes and oranges. Grapes weigh 9 kilograms, and oranges weigh three times as much as grapes. How many kilograms are grapes and oranges?

unit testing

1.

( 1)28+35=( )

Think about it: 28+30 = ()

( )+5=( )

(2)68-39=( )

Think about it: 68-30 = ()

( )-9=( )

(3)90-42=( )

Think about it: 90-40 = ()

( )-2=( )

(4) 120+50=( )

Think: 12 () plus 5 () equals () ten, and 17 ten is ().

(5)560-40=( )

Think about it: 56 () minus 4 () equals () ten, and () equals 520.

(6)3700+600=( )

Think about it: 37 () plus 6 () equals (), and () equals 4300.

2. oral calculation.

65+23= 65-56= 590-70= 400+500=

43+56= 430+50= 890-60= 370+200=

36+48= 720+40= 97-8= 750-400=

94+32= 270+60= 240-80= 530-60=

82-43= 780-30= 300+30= 500-90=

3000+4000= 5000+ 1500= 3500-2000=

7000-5000= 8000+900= 3700-800=

4000-500= 9500-3000= 8600-2200=

8500-2000= 2500+6000= 2000+90=

Write down the sum and difference of two numbers on each card.

4. Fill in ""or "=" in ○.

670-30○650 1000○99+ 1

75-26○50 36+64○ 100

8000-400○4000 3500+500○40000

5050-50○5000 9500-5000○9000

3600+30○3900 10000-900○9 100

5. Formula calculation.

(1) What's the difference between 420 and 80? (2) What is the sum of 600 plus 370?

(3) How much is1900 more than 600? (4) How much is 90 less than 820?

6. Application questions.

(1) A pile of coal weighs 2500 kg, and 500 kg is used. How many kilograms are left?

There are 9000 books in the bookstore. 2000 copies were sold on the first day, and 1500 copies were sold on the second day. How many books are left?

(3) There are 200 students in Grade Two, 220 students in Grade Three, and 80 students in Grade Four/kloc-0. How many students are there in Grade Three?

(4) There are 750 students in the school, including 300 boys and how many girls?

(5) The farmer's uncle collected 8000 kilograms of fruit, including 3000 kilograms of apples, 4000 kilograms of pears, and the rest were oranges. How many kilograms of oranges are there?

unit testing

1. The following is the favorite vegetable statistics of Class Two (1).

(1) The number of people who like to eat cabbage is four times that of eggplant. How many people like to eat cabbage?

(2) Filling and painting to complete the statistical chart.

(3) What other math questions can you ask? _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Parallel computing.

2. Complete statistics and charts and answer questions.

There are 25 comic books, 15 story books, 10 fairy tales, 10 science and technology books and 5 other books in the class book corner.

Answer the following questions:

(1) () is the most and () is the least. What other questions can you ask?

(2) Students launched a "book donation activity", including comic books 10, 22 story books and 7 fairy tales. The number of science and technology books remained unchanged, and the total number of books increased by 30. Can you count how many books there are now?

(3) Compare the number of original books and existing books, make a composite statistical table and analyze it. What advice do you think the class book corner needs?

3. Be a small statistician

(1) Xiaodong investigated the flowers in the school biology park. Can you help him fill in the statistics and solve some problems?

There are twice as many blue flowers as red ones.

② The number of purple flowers is 8 less than the total number of red flowers and yellow flowers.

(3) How many are four flowers and one * * *?

(2) Xiaodong continues to investigate the number of flower trays in the school biology park. Can you help him fill in the statistics and solve some problems?

(1) () spends the most plates, while () spends the least. There is a difference between them ().

② What other questions can I ask? And the solution of the formula is listed.

_____________________________

_____________________________

Selected exercises

1. Observe the graph carefully. How should I draw the fourth picture?

Answer: You can make a circular piece of paper, as shown in the picture (1). The rule of this problem is to rotate this circular paper clockwise by 90 degrees, and then you can get Figure (2), Figure (3), Figure (4) and Figure (5) in turn. The fourth picture should read:

2. According to the arrangement of the following string of black and white beads, which beads should be painted black? What color is the 30th bead?

A: This bead has two colors, and black and white beads are arranged alternately. Separately, black beads start from 1, and the number of beads is arranged in descending order, while white beads start from 5, and the number of beads is arranged in descending order, as shown in the following figure:

We regard each group of black beads and the immediately following group of white beads as a big group. As you can see, each big group starts with black beads and ends with white beads. There are six beads in each big group, and the thirtieth bead is just the last one in the fifth group. It is a white bead.

3. As shown in the figure, arrange natural numbers in a spiral along the sides of a triangle from small to large, with 2 at the first corner, 4 at the second corner, 7 at the third corner, ... What is the natural number at the tenth corner?

Answer: This question is relatively simple. Draw a graph and arrange the natural numbers on the sides of the triangle as required. The answer is also 56.

Observe the pictures, analyze them carefully and find the rules.

First turn 2= 1+ 1

The second angle is 4= 1+ 1+2.

The third turn is 7= 1+ 1+2+3.

Turn 411=1+1+2+3+4.

Fifth turn16 =1+1+2+3+4+5.

Discovery rule: the number on the corner is the sum of a series of natural numbers starting from 1 and then added to 1. On which angle, it is added to which natural number, so the number on the tenth angle is:1+1+2+3+4+5+6+7+8+.