1. In the formula without brackets, if there is multiplication, division, addition and subtraction, you must first calculate ().

2. Calculate 32- 16+22, and calculate () first.

3. To calculate 24×(27- 19)÷ 16, you should calculate () first, then (), and finally (), and the result is ().

4, a number multiplied by 0, product time (); Divide 0 by the number () and the quotient is 0.

The sum of 5, 36 and 14 is multiplied by their difference, the product is (), and the formula is ().

Second, calculation.

82-36+25 750×2-2 100÷3 56÷7×8 25×3÷25×3

65×4×9 15+6-3 15×6÷3 80÷8×5

Third, the application problem.

1. The master processes 168 parts per hour, and the number of parts processed by the apprentice per hour is exactly half that of the master. 1 hour How many parts did master and apprentice process?

Lily bought three notebooks, each with 3 yuan money, and four pens. The price of each pen is twice that of a notebook. How much did Lily spend?

3. A box of tomatoes weighs 25 kilograms, and a basket of radishes weighs 48 kilograms. After selling half of the tomatoes and radishes, the remaining tomatoes and radishes weigh 38 kilograms. How much does a box and a basket weigh?

Mom took 600 yuan to the mall. She spent 248 yuan on a sweater and 252 yuan on a leather bag. How much should she get back?

5. Uncle Wang rides a bike at a speed of18km per hour, and it takes six hours to get from A to B. If it takes two hours to transfer to a bus, how many kilometers does the bus travel per hour?

6. An old man said, "Add my age to 12, divide it by 4, then subtract 12 and multiply it by 10. Just 100 years old. " How old is this old man now?

7. When using a calculator, a classmate should add 12 in the last step, but he divided it by 12, so the wrong answer is 12. What should be the correct answer?

Unit 1 math test in the second volume of grade four 1. Write numbers directly (6 points)

3 1+67-32= 7×9÷3= 100- 100÷2=

250÷(50-25)= 0÷ 100÷50= 4×50×0=

II. Fill in the blanks (15)

1, elementary arithmetic law:

(1) In the formula with brackets, calculate first, then calculate.

(2) In the formula without brackets, when there are both addition and subtraction operations and multiplication and division operations, calculate first and then calculate.

(3) In the formula without brackets, if there is only addition, subtraction or multiplication and division, it should be calculated in sequence.

2. Operation on 0:

(1) Multiply any number by 0 to get;

② Divide 0 by a non-zero number;

3 Any number added to 0 is;

(4) subtract 0 from a number to get it;

3. To calculate 24+(27- 19) × 16, it should be calculated first, then calculated finally, and the calculation result is.

4. Combine the following formulas into a comprehensive formula.

15×16 = 240 28-12 =16 comprehensive formula:

420 ÷ 30 =147× 34 = 23814+20 = 34 Comprehensive formula:

Choose one and put the serial number of the correct answer in brackets. (7 points)

1, known as ○+△ =□, the following formula is correct ().

a 、○+□=△ B 、△+□=○ C、□-△=○

2. The following set of expressions with the same operation order is ()

a、58-27+36 B、72-56÷8 C、40÷5×8

38÷2×7 (72- 12)÷6 40-5×8

Miss Li bought a badminton racket and six balls, one for 68 yuan and one for 32 yuan. How much is a ball? ( )

A, (68-32 years old) 6 years old B, 68 years old 6 years old C, 68-32 years old 6 years old

4. Xiaodong reads a story book. Four days ago, he read 68 pages, and three days later, he read 72 pages. How many pages does Xiaodong read on average every day? The correct formula is ()

a、72÷3 B、72÷3+68÷4 C 、( 68+72÷4+3)

5. (270+770 ÷ 55)-190 ÷10 The correct operation sequence is ().

a 、( 270 + 770 ÷ 55)- 190 ÷ 10

b 、( 270 + 770 ÷55)- 190 ÷ 10

② ① ③ ④ ② ① ③ ②

c 、( 270 + 770 ÷ 55)- 190 ÷ 10

② ① ④ ③

6、△+△÷(△×△)? The first step of calculation should be ().

Addition, division, multiplication

7, the following statement is correct ().

Divide a and 0 by any number to get 0 b, a+b=0? Then a=b

C, 0 and any number can be multiplied.

Four, you are a small judge, right "√", wrong "x". (5 points)

1. In formula 40-20÷5× 10, subtraction, division and multiplication must be calculated first. ( )

2. If there is only addition and subtraction in the formula, add first and then subtract. ( )

3. Comprehensive formula:12×10 ÷ 0 =120 ()

4. The result of100-(5+5× 4) is the same as that of (100-5+5)×4. ( )

5. When the minuend is equal to the minuend, the difference is 0. ( )

Fifth, fill in the appropriate figures in the box first, and then make a comprehensive calculation. (10)

Comprehensive formula: comprehensive formula:

Find out the calculation errors of the following questions and correct them. (4 points)

1, 800-600 \u( 25×4) correction:

=200÷(25×4)

=200÷ 100

=2

2,50-(24+26) ÷ 25 correction:

=50-50÷25

=0÷25

=0

Seven, think about the operation order, and then calculate, but be careful! (2 1)

360÷(60-54) 0÷32+32÷4 200-(76+40×3)

2×80-60÷5 1800-400÷25× 100

(37- 15)×(8+ 14) 42+6× 12-4

Eight, list the comprehensive formula of the following questions, and then calculate (6 points).

1.96 minus 35 times the sum of 63 and 25. What is the product?

What is the quotient of 2.480 divided by 6, plus 20 divided by 25?

What is the sum of 7 times 3.42 and 485 divided by 5?

Nine, solve the problem, column comprehensive formula calculation (26 points)

1. A flour mill grinds 200 kilograms per hour. According to this calculation, how many kilograms of flour can six flour mills grind in five hours? (5 points)

2. Mom bought 8 Jin of apples and pears, 4 yuan for apples and 3 yuan for pears. * * * How much did it cost? (5 points)

The car travels 300 kilometers in 6 hours and the train travels 600 kilometers in 6 hours. How many kilometers does the train travel more than the car per hour? (5 points)

Two motorboats, A and B, set off from two places at the same time. Ship A travels at a speed of 24 kilometers per hour, while ship B travels at a speed of 27 kilometers per hour. Three hours later, the two ships were still 8 kilometers apart. What is the distance between the two places? (5 points)

Xiaohong went on a trip with her parents. A trip to Huangshan 1900 per person, and a trip to Hangzhou, 2600 per person. The price of children in both places is half price. Xiaohong and her mother traveled to Huangshan Mountain. Is it enough to take 3,000 yuan to the travel agency? (3 points)

How much does it cost for Xiaoming's family of three to travel to Hangzhou? (3 points)

Fourth grade mathematics volume 3 unit 3 examination questions fourth grade mathematics volume 3 examination questions.

(full name)

I am best at filling in the blanks. (20 points)

1. Fill in the form

Additive commutative law's laws of addition and association, multiplication and exchange, multiplication and association, multiplication and distribution.

Expressed in letters

2. Fill in the operator number in □ and fill in the appropriate number on the horizontal line.

( 1)436-279-2 1=436-(279□_____)

(2)34× 125×8=34×(___□____)

(3) 120÷5÷4= 120÷(___□____)

(4)49×38+ 15×38+38=(49+___+___)×___

3. put ">" in □ "<; Or "=".

65 1-45-355□65 1-(45+355)

12× 15×25□ 12×( 15+25)

80× 125□ 10×8× 125

15×( 14+6)□ 15× 14×6

Second, the judge judges right and wrong. (Draw "√" correctly and "×" incorrectly) (5 points)

1.2 15-37+33=2 15-(67+33) ( )

2.240÷5÷4=240÷(5×4) ( )

3. 102×47= 100×47+2 ( )

4.85× 16=85× 10×6 ( )

5.99× 125+ 125=(99+ 1)× 125 ( )

Third, merit-based admission. (Fill in the serial number of the correct answer in brackets) (4 points)

1.53×24+53×36=53×(24+36) Use ().

A. Multiplicative commutative law B. Multiplicative associative law

C. law of multiplicative distribution

2. The simple algorithm of125× 4× 25× 8 is ().

A.( 125×8)×(4×25)

B. 125×8+(4×25)

C.( 125×25) ×(4×8)

3.792× 99 = 792×100 □ 792×1,□ should be filled in ().

A.+b .-c×

4. Multiply three numbers, the first two numbers are multiplied or the last two numbers are multiplied first, and the product is unchanged. This is the so-called law of multiplication ().

A. Exchange B. Combination C. Distribution

Fourth, the math clinic. (Draw "√" correctly, draw "√" incorrectly, and correct it) (3 points)

1.675-(275+43) 2.76×99+76 3、47×99

=675-275+43 =76×(99+ 1) =47×(99+ 1)

=400+43 =76× 100 =47× 100

=443 =7600 =4700

( ) ( ) ( )

5. I am a psychic. (14)

1. Write the number directly.

15× 1 1= 2400÷25= 180-79-2 1= 25× 13×4=

200÷5÷4= 480÷3÷8= 125×3×8= 16×99=

2. Calculate the following questions as simply as possible.

2 14×27- 14×27 478- 163- 137 5000÷ 125÷8

28 1+93+ 1 19+207 99×34

6. Which algorithms are used in the following formula? (5 points)

1.49+ 137= 137+49 ( )

2. 19×4=4× 19 ( )

3. 172+39+28+26 1=( 172+28)+(39+26 1) ( )

4.(8×79) × 125=(8× 125) ×79 ( )

5.32×43+32×57=32×(43+57) ( )

Seven, I will do the questions as required. (Calculate first, then put it. "

1.490÷7+560÷7= (490+560) ÷7=

490÷7+560÷7□(490+560) ÷7

2.340÷2+480÷2= (340+480) ÷2=

340÷2+480÷2□(340+480) ÷2

Judging from the above two sets of formulas, what are your rules? (represented by letters a, b and c)

Eight, column calculation. (9 points)

What is the sum of the product of 1. 125 and 79 plus the product of 125 and 2 1?

2. The divisor is 32, the quotient is 15, the remainder is 9, and what is the dividend?

What's the difference between 3.777 and 560 divided by 7?

Nine, solve the problems in life. (33 points)

1. A comic book has 188 pages. Linlin read 57 pages on the first day and 43 pages on the second day. How many pages are left?

There are 4 bookcases in Miss Li's house, with 9 floors and 25 books on each floor. How many books are there in Miss Li's house?

3. There are fruit trees 1268 in the orchard, including 475 pear trees, 325 jujube trees and the rest apple trees. How many apple trees are there?

A rose exhibition was held in the park. Red roses and yellow roses 15 rows, 24 pots of red roses and 26 pots of yellow roses. How many pots of red roses and yellow roses were put in?

.5. The statistics of the first issue of Challenge Moderators are as follows. (unit: minutes)

Total number of on-site hosts of individual speeches and talent shows of players

1 number 92 88 90

No.2 90 92 89

No.3

(1) Fill in the form completely.

(2) How many points is the highest score in each round more than the lowest score?

(3) Please ask a math problem.

Ability improvement (10)

Little Carelessness Due to carelessness, 70×(+5) is calculated as 70×+5. Please help me calculate. What is the difference between the result he got and the correct result?

Type the English test questions in Unit 1, Book 2, Grade 4. I don't know these questions.

The first unit of fourth grade mathematics can't be given because there is no prescribed version.

It is necessary to define the version, such as People's Education Edition and Beijing Normal University Edition.

Because the mathematics content of the first volume of the fourth grade in different regions may be different, you can't write papers at will, otherwise it will mislead students.

If you want the first volume of the science midterm paper in grade five, you should be prepared to explain the version and which province and city.

The questions and answers of Unit 1 of Mathematics in Volume II of Grade Four in primary school a\b=s, sxb 10a = 150, so how much is a = 75.

Unit test questions of four operations in Unit 1 of the fourth grade of primary school mathematics 1. fill (up) a vacancy

1. In an equation, if there is only addition and subtraction, you need to calculate (), if there is only multiplication and division, you need to calculate ().

2. In a formula, if there are four operations: addition, subtraction, multiplication and division, you should calculate () first and then ().

3. If there are parentheses in the expression, () must be calculated first.

Second, oral calculation.

36 ÷ 3 100 - 62 24 - 8 + 10

75 × 30 37 1 - 37 1 35 + 24 - 12

200 ÷ 40 84 ÷ 4 48 ÷ 8 × 9

Third, comparison and calculation

49 + 17 - 25 240 ÷ 40 × 5 300 - 50 × 2

49 -( 17 + 25) 240 + 40 × 5 300 - 50 × 20 × 0

Fourth, calculate the following questions

12 1 - 1 1 1 ÷ 37 ( 12 1 - 1 1 1 ÷ 37)× 5

280 + 650 ÷ 13 1000 -(280 + 650 ÷ 13)

707 - 35 × 20 ( 120 - 103)× 50

760 ÷ 10 ÷ 38 (95 - 19 × 5 )÷74

45 × 20 × 3 (270 + 180)÷(30 - 15)

Five, solve the problem:

1. There are 80 color TVs in the shop. 25 sets were sold and 40 sets were shipped. How many color TVs are there in the shop?

2. A box of Coke 72 yuan, a box of 24 bottles, and Xinxin wants to buy three bottles. How much will it cost?

The fruit shop sent eight boxes of apples and eight boxes of oranges. Apples are 25 kilograms per box and oranges are 20 kilograms per box. How many kilograms of fruit did a * * * send?

Teacher Zhang wants to correct 58 compositions, and has already corrected 22. If you grade 9 articles per hour, how many hours will it take to complete?

Where can I find the answer to the unit test questions in the second volume of the fourth grade mathematics in Baidu Library? Download as required.

It can also be downloaded from the first courseware network. All this is free and easy to use.

Four grades mathematics (on) three unit examination questions 2000-25=hhhh.

Grade four, volume two, math unit test, answer five, I use my brain, I can fill it out! (No.6, 1 1, 1, 2 points for each small question, ***22 points)

1. Triangle can be divided into (acute triangle), (right triangle) and (obtuse triangle) according to angle; If it is divided by sides, it can be divided into (isosceles triangle), (equilateral triangle) and (equilateral triangle).

2. Triangle has (stability), and each triangle has (3) heights.

3. Each triangle has at least (2) acute angles; There are at most (1) right angles or obtuse angles.

All three sides of an equilateral triangle are equal, and all three angles are (60? )。 So an equilateral triangle is an (acute) triangle.

5. One side of the isosceles triangle is 8 cm long and the other side is 10 cm long. Its circumference can be 26 cm or 28 cm.

6. The interior angles of triangles are all (180? ), the sum of any two sides (greater than) the third side.

7. In a triangle, the sum of two internal angles is 89, and this triangle is an (obtuse) triangle according to the angle.

8. The two waists (equal) and (two base angles) of an isosceles triangle are also equal.