Help me find some math problems for the fourth grade in primary school.

32.8+ 19= 0.5 1÷ 17= 240÷30= 1000×0.8=

3.06+0.2= 0.67+ 1.24= 8× 125= 7-6.28=

8.2-0.0 1= 99×23= 50×4= 5÷ 1000=

0.42+9.5= 65×25×4= 0.08÷ 100= 10×0.5=

1.82-0.63= 4.5+ 1.5= 1-0.63= 23 1-99=

Two. Fill in the blanks (each blank 1, *** 15)

1. A number, one billion digits 6, one million digits 4, one hundred thousand digits 5, one thousand digits 8, and the rest are zeros. This number is written as () and read as (), and the counting unit of the highest digit is ().

2.32,368.7 million, writing (), rewritten as "100 million" is about ().

3.25m 60mm = () mm

4.3.45 square meters = () square meters () square decimeter

5. 150 points = () points.

6. 15 ton 60 kg = () kg

7. Both natural numbers and 0 are () numbers.

The smallest number is ().

Three. Judgment (tick "√" in brackets for the right and "×" in brackets for the wrong) (each question 1, * * * each question 10)

1. The meaning of decimal addition is exactly the same as that of integer addition. ()

2. Two disjoint lines are called parallel lines. ()

3. In division with remainder, the divisor must be greater than the remainder. ()

4.0.47 magnification 10 times equals 470 reduction 100 times. ()

5. The angle is related to the length of the side. ()

6. Decimal must be less than integer. ()

7. The largest four digits are more than the smallest five digits 1. ()

8. A triangle with two acute angles is called an acute triangle. ()

The simple algorithm of 9.57× 10 1 is 57× 100+57 = 5757. ()

10 product. A× B must be greater than a. ()

Four, the calculation problem (***33 points)

1. Calculate the following questions and check them. (2 points for each question, * * * 4 points)

①802× 1 1 ②329÷48

2. Find the unknown X. (2 points for each question, ***8 points)

①x× 123 = 1845②x+0.05 = 3.528

③x-3.6=7.89 ④8064÷x= 144

3. Calculate the following questions and use a simple algorithm (3 points for each question, ***2 1 minute).

①387 1-( 1080-740)×7 ②5 175÷207+ 102×9

③0.9+ 1.08+0.92+0. 1 ④ 13.59-6.9 1-0.09

⑤983×(3.8+2.2)+0.237× 1000

⑥0.8×(35+65)×5÷ 100

⑦30-[ 17.8+(6.2+38÷ 10)]

V column calculation (3 points for each question, *** 12 points)

1. 10 minus the sum of 5.6 and 1.4, and the difference is divided by 246. What is the quotient?

2.6.2 What is the product of the sum of 2.4 and 1.3 minus the difference multiplied by 100?

3.2 1 times the product of 32 and 88, and the product is subtracted from 9 136. What is the difference?

What is the sum of the quotient of 4.357 divided by 7 and the product of 1000 and 0.875?

Six, application questions (5 points per question, ***20 points)

1. A grade three or four primary school needs to water 620 trees. In the third grade, 40 trees should be watered every day for 8 days. The rest will be watered in the fourth grade. How many trees will be watered every day after five days?

2.3 The loom weaves 336m in 4 hours. According to this calculation, how many meters does 1 loom weave in 8 hours?

The distance between Party A and Party B is 560 kilometers. One car travels from Party A to Party B at a speed of 48 kilometers per hour, and the other car travels from Party B to Party A at a speed of 32 kilometers per hour. How many kilometers apart are the two cars five hours after they leave the two places?

A section of highway was originally planned to be completed in 20 days. Actually, 45 meters are built every day more than originally planned, and the task is completed five days ahead of schedule. How many meters was originally planned to be built every day?

Reference answer

I (omitted)

2.1.60000,604.508 billion, billion.

200,000,000,324 billion.

3.25060

4.3,45

5.2,30

6. 15060

7.the whole

Three. 1.√ 2 .× 3.√ 4.√ 5 .× 6 .× 7 .× 8 .× 9.√ 10 .×

4. 1. Calculate the following questions and check.

①8822 ②6……4 1