The minus sign is in front of the brackets, and the operation sign in the brackets should be changed.
Can you learn to remove brackets and fill brackets in the addition and subtraction of math scores in the second volume of the third grade? Yes, of course I will. As long as I learn to add and subtract fractions and then follow the four operations, I should be able to remove brackets and field brackets as required! Start (a disease)
Grade 3 Mathematics Volume 2 July 2
Vertical calculation: 5897 ÷ 29 = 72082 ÷ 36 = 442× 34 = 387× 27 =
Application problem: rabbits are packed with mushrooms, 24 in a box, and 240 boxes are left 1344. How many boxes can these mushrooms hold in one * *?
July 3(rd)
Recursive calculation: 61200 ÷ 68+60423×1353 ÷ 36.
5240+3760÷47 ( 1000-5278÷58)× 100
Application problem: a story book *** 120 pages. Xiao Ming originally planned to read it in 10, but actually read it for two more days. How many pages does he read on average every day?
The fourth of July.
Vertical calculation: 5897÷29 = 72082÷36=
Text question: What is the quotient of 78520 divided by 26 greater than 1500?
What is the product of 15 times 13 plus 19?
Application question: An elephant can eat 200 kilograms of food a day. How many kilograms of food can five elephants in the zoo eat a week?
July 5(th)
Recursive equation calculation:132 ÷ 33+6400 ÷ 80 (478-78) × (462 ÷ 77)
600-240÷ 15 (260+4440÷4)÷ 10
There are three layers of books on the shelf. There are 60 books on the first floor, twice as many as on the second floor. There are fewer books on the third floor than on the second floor 15. How many books are there on the third floor? How many books are there on this shelf?
July 6(th)
Recursive calculation:1910 ÷ 45× 50 3000-101× 23 45× 99+99× 54.
Text question: What is the result of multiplying two 350?
There are 8400 kilograms of flour in the warehouse, packed in a bag every 20 kilograms. These flours are distributed equally among six supermarkets. How many kilograms of flour can each supermarket get?
July 7(th)
Recursive equation calculation: 47× (350+450) 352 ÷1+7× 38 92× 428+8× 428.
Title: A number is 258 less than the sum of 14 670. What's this number?
There is a kind of milk candy, which is packed in a bag every 20 grains and packed in a box every 25 grains. Now there are 30 thousand pills. How many boxes can you hold?
July 8(th)
Recursive equation calculation: 384 ÷ 24×105 (18539-829) ÷ 35.
96×48÷32 10600÷( 106×25)
Xinwei Stationery Factory originally planned to produce 3000 pens every month. After technical innovation,/kloc-0 completed the annual production task in 0/0 month. How many pens are actually produced every month on average?
July 9(th)
Vertical calculation: 728× 45 = 890 ÷ 35 = 305× 507 = 3060× 440 =
A bottle of oil and a bottle of * * * weigh 5025g. Half of the oil was used, and the bottle weighed 2525 grams. How many grams does the oil weigh?
July 10
Recursive calculation: 4203-3877+123140× 86+655.
12020-304×27 ( 135+245)×64
A wire was cut 960 meters, and the rest was exactly six times as long as it was cut. How long is this wire?
July 1 1
Recursive calculation: 778+22×108 2800× 25 ÷ 28 94× 830-54× 830.
Text question: What is the sum of 85 times 280 and 120?
On Arbor Day, Class 4 (1) planted 426 trees, and Class 4 (2) planted 3 10 trees. The two classes were divided into 16 groups. How many trees were planted in each group on average?
July 12
Recursive equation calculation: 256×27= 665×78= 89×254=
Fill in the blanks: there are () zeros in the quotient of 2725÷25.
The ticket price of Changfeng Ocean World is 60 yuan per ticket. If there are many people going, it is more cost-effective to buy a group ticket. There are 43 people in Xiao Pang's class to visit, and they spent 1935 yuan to buy group tickets. How much cheaper can each person be?
July 13
Vertical calculation: 458×26 = 7070÷35 = 3522÷3 1 =
Fill in the blanks: the quotient of 7820÷54 is () digits.
There are 840 female workers in a factory, 60 fewer than male workers and twice as many as male workers. How many workers are there in this factory?
July 65438, 2004
Clever parentheses make the equation hold:
( 1) 70+40×7=770 (2) 6× 12- 10=2×4+4
(3) 100-52÷4= 12 (4) 64÷2×4=80-53+ 19
Xiao pang walks from home to school at a speed of 60 meters per minute. /kloc-leave school in 0/5 minutes 100 meters. How far is Xiao Pang's home from school?
July 15
Recursive calculation: 768 ÷ 48+289 480+ 120 ÷ 24.
97 1- 135+265 1427 1÷(923÷ 13)
The price of microwave oven is 480 yuan, and the price of color TV is cheaper than microwave oven 16 times. 74 yuan, what is the price of a color TV?
July 16
Do not calculate, compare sizes directly:
152× 15 ○ 152×5 1 240×35 ○ 24×350 760÷48 ○ 760÷43
398÷ 16 ○ 498÷ 16 420÷ 10 ○ 840÷20 623÷62 ○ 536÷56
Dad is 48 years old this year, which is exactly three times that of Xiaoming. How old are Dad and Xiaoming this year?
July 65438, 2007
Recursive calculation: 2435-256+465 807×15-207 96× 23÷16.
On Children's Day, 3452 people from the school went to Moon Garden Park to play. How many cars do you need if each car is limited to 45 people?
July 18
Recursive equation calculation: 467+533×18125× 32× 25 2002 \ (264-238)
The entrance price of Moon Garden is 80 yuan. If there are many people going, it is more cost-effective to buy a group ticket. There are 700 participants in the third grade. If you buy a group ticket and pay 40600, how much cheaper can each person be?
July 2009, 65438
Recursive equation calculation 289+768 ÷ 8314-3060 ÷1235× 65+35× 35.
There are 280 loaches in the pool in the park, and the number of goldfish is less than 108 times that of loach 15 times. How many goldfish are there in the pool?
July 20(th)
Recursive equation calculation: 360× (255 ÷ 5-38)1652 ÷ (892-864)
Grade three students walk from the playground to the water stage 15 minutes. If everyone walks at a speed of 42 meters per minute, what is the distance from the playground to the stage? On the same journey, the first-grade children walked 2 1 minute. What is their walking speed?
July 2 1 day
Vertical calculation: 479× 69 = 740× 4500 = 34567 ÷ 82 = * 85290 ÷ 87 =
The audience on the water stage has 16 rows. When 3,452 people in the whole school were seated, it was found that 188 people had no seats. How many people can the audience on the water stage sit in each row on average?
July 22(nd)
Equation calculation: (432+668) ÷ 20 94× 347 ÷ 47 782 ÷ (15+8) ×15.
Moon Lake in the park covers an area of about 300,000 square meters. If the area of a rectangle with a length of 1 200 meters is equal to the area of the Moon Lake, what is the width of this rectangle? What is the circumference of this rectangle?
July 23(rd)
Vertical calculation 57× 829 = 290× 9400 = 5630 ÷ 230 = 7600 ÷1500 =
On a piece of rectangular paper with a length of 10 decimeter and a width of 8 decimeters, cut out a rectangular paper with a length of 4 decimeters and a width of 3 decimeters. Think about it. What is the circumference of the remaining figure in decimeters?
July 24(th)
Vertical calculation: 809-74-136 390 ÷ 6+804 402×138-38 652+289-352.
Xiao Pang wants to put four small squares with a side length of 3 cm into a rectangle. What is the circumference of this rectangle? If you spell it into a big square, what is the circumference of this big square? (can be analyzed by drawing)
July 25(th)
Recursive equation calculation 2040-2040 ÷ 40 96× 43+43× 4125× 25× 8× 4
Fill in the blank: the quotient of □70÷52 is 2 digits, □ can be filled in (), and the highest digit is ().
Surround three sides with 22-meter-long barbed wire against the wall to form a rectangular chicken farm. It is known that its length is 6 meters. What is its area?
July 26(th)
5000 square centimeters = () square decimeter 60 square meters = () square decimeter
38 minutes = () hours170cm = () meters
A rectangle with a circumference of 64 cm consists of three identical small squares. So what is the circumference of each small square?
July 27(th)
Title: In the division formula, the quotient is 490 and the remainder is 15. What's the minimum bonus?
Question: What is the quotient of 32 divided by the sum of 69 and 59?
Title: 8 12 minus the sum of 24 consecutive 12. What is the difference?
Fill in the blank: 345 1÷□7 quotient 1 zero sum and no residue, □ can be filled in ().
The school expanded its swimming pool this year. The original swimming pool is120m long and 40m wide. After the expansion, the width increased by 30 meters. The length has not changed. How many meters has the circumference increased after the expansion of the swimming pool? How many square meters has the area increased?
July 28(th)
Equation125× 23× 8 57× 57+43× 57 25+25×12.
Fill in the blanks: A 36-centimeter-long wire forms a rectangle. When the length is () decimeter and the width is () decimeter, the area is the largest, which is () square decimeter.
A line just surrounds a rectangle, which is 38 cm long and 10 cm wide. How long is this wire?
July 29(th)
Recursive calculation: 309-267+191756 ÷ 36× 32 675-154-46.
Fill in the blanks: The product of 78×42 is between () and ().
Xiao pang walked from home to school at a speed of 42 meters/minute, which took 12 minutes. After school, it took him 65,438+08 minutes to get home from school. What was his speed when he got home?
30 July
Recursive equation calculation: 35× 35—35 ÷ 5 973—(73—478) 864—864 ÷ 9.
Text question: 105 times the sum of 24 and 22, what is the result?
The chocolate factory packed a batch of Dove chocolates, one for each 12 chocolate, with 69 boxes packed and 852 unpacked. How many boxes can a * * * hold?
Math () x () =120012x100 =1200.
120× 10= 1200
1.2× 1000= 1200
30×40= 1200
3×400= 1200
4×300= 1200
2×600= 1200
20×60= 1200
5×240= 1200
50×24= 1200
6×200= 1200
8× 150= 1200
80× 15= 1200
……
1.2x 1000 12x 100 10 1200 x 1 2x 600 20x 60 200 X6 3x 400 30x 40 300 x4
5X240 50X24 500X2.4
The third grade of primary school, the second volume of mathematics problems, the third grade of primary school?
Math 8 1 page 10 in grade three. Each square below represents 1 cm2. Draw a rectangle with an area of 16 square centimeter on the square paper. How many can you draw? Calculate their perimeters and fill them in the table. What pattern can you find?
1 1. Cut out a rectangle with a length of 6 cm and a width of 4 cm from a square with a side length of 10 cm. Xiao Ming thought of three methods. What's the remaining area? What about the rest of the circumference?
Answer:
10.
Length, width, area perimeter
16 1 16 34
8 2 16 20
4 4 16 16
1 1. area: 76 square centimeters 72 square centimeters 76 square centimeters.
Circumference:100cm108cm112cm