fill (up) a vacancy

1. The percentage is also called _ _ _ _ _ _ _ or _ _ _ _ _ _ _.

2. Ten percent is _ _ _ _ _. 60% discount on leather shoes means that the current price is _ _% of the original price.

3. = _ _ _ _ _% = _ _ _ _ (decimal) = _ _ _ _ _ (score) = _ _ _ _ _ _ _ _.

4.20× means _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

5. The reciprocal of1is _ _ _ _ _ _. 6 hours = _ _ _ _ _ days.

6. The calculation rule of fractional division is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

7. The radius of a circle is 3cm, and the circumference of this circle is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

8.25 is _ _ _% larger than 20. _ _ _ _ _ _ is rice.

9. A pile of sand has been transported away by 4.5 tons, just all of it. The weight of this pile of sand is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

10. You can type a story in an hour, and _ _ _ _ _ can type 1 hour. If you type this manuscript within hours, 1 hour will type _ _ _ _ _ copies of this manuscript.

Second, the calculation problem.

1. Oral calculation:

× 45× ÷ 10 0÷8

5.4× ÷ 0.65× 50%-0.05

2. Find the unknown χ

8.6÷Ⅹ=2 Ⅹ×( 1+ )=36 Ⅹ÷ 1 =2

1 Ⅹ= 10 3 ÷ Ⅹ=3.5 Ⅹ-5 =2

3. calculation.

4 ÷ -3 × 1 ×25 -20 ÷5+5

( 1 - 1 )÷(6- )×4 [ 1 ×( 1 - )+5 ]÷3

4. Column calculation.

1.8 What percentage is more than 5? 2。 What is 24 squares 1?

What is the difference between the product and subtraction of 3.24 and its reciprocal?

What percentage of 3 kg is 4.4 kg? 5。 How many tons is more than 3 tons?

Third, multiple choice questions.

All the 200 parts produced by 1. passed the inspection, and the qualified rate was ().

a、200% B、 100% C、2%

The reciprocal of 2.0.6 is ()

a、B、6 C、D、 1

3. 10 ton of rice increased by 10%, and then decreased by 10%. The result is ()

A, 9.9 tons b, 10 tons c, 10. 10 tons d, 1 1 ton.

4. In fractional division, if the quotient is greater than the dividend, then the divisor must be ().

A, true score b, false score c, band score d, 1

5. The number of A is equal to the number of B. Compare the sizes of A and B, ()

A, number A is greater than number B, number B is greater than number C, and the two numbers are equal in size.

6.12m, increase and then decrease, and the result is ()

a、 12m b、 1 1m c、 14m。

7. The number 5 is greater than 12, which is ()

a、8 B、 1 1 C、 17

8. Cut a round iron piece with a diameter of 10 decimeter into two semicircular pieces with equal size, and the circumference of each semicircular piece is ().

a、5π B、5π+5 C、 10×( π+ 1)

9. The circumference of a circle is () times the diameter.

a、3. 14 B、π C、3. 146 D、3. 142

10. Two boxes of apples are 45 boxes. If you take five apples from box A and put them in box B, the number of apples in box B is only more than that in box A ().

a、25% B、20% C、 12.5% D、 10%

Fourth, the application problem.

1. Uncle Wang bought a three-year treasury bill with an annual interest rate of 3. 18% 2000 yuan. How much interest will he get after three years?

2. A pile of fertilizer has been transported away by 37.5%, just 7 tons. How many tons are left in this pile of fertilizer?

Xiaoling deposited 3000 yuan in the bank, with the annual interest rate of 3. 18%. How much principal and interest can she get back after three years?

Now the price of a leather coat is 640 yuan, which is 20% lower than the original price. What is the original price?

Yucai Primary School planted 560 trees in the fourth grade this year, and more trees were planted in the fifth grade than in the fourth grade. How many trees were planted in the fifth grade?

6. A project is completed by two teams in 20 days, and by team A alone in 30 days. Now 15 days later, the rest will be completed by team a, how many days will it take?

7. Annular washer for machine parts with an outer diameter of 3 cm and an inner diameter of 1.5 cm. What is the area of this washer?

8. The first time I took out a barrel of gasoline, the second time was 25% 22.5 kilograms more than the first time, just twice. How much does this barrel of gasoline weigh?

Finally finished. Don't forget to check again.