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First, read the questions carefully and fill in the blanks carefully (22 points)

(1) 0.32 = ()% Seventy-five = ()%

(2) A garment is sold at a 15% discount, which means that () is 95% of ().

(3) 37+37+37 uses the multiplication formula, and the formula is ().

5 × 45 means ().

(4) 15 is ()% of 12, and12 is less than ()% of 15.

(5) 34 includes () 3 16, and 45 of () tons is 34 tons.

(6)1573× 37+37×16873 The algorithm that can be applied in simple calculation is ().

(7) Given that the product of two factors is 1324 and one factor is 26, the calculation formula for finding the other factor is ().

(8)*** planted 200 seedlings and 6 died. The survival rate of these seedlings is ()%.

(9) The reciprocal of 34 is (), and the reciprocal of A is (). (a ≠ 0)

(10)56 hours = () minutes 125g = () tons.

(1 1) Fill in >,< or =

7 12 × 100 10 1 ( )7 12 199 100 × 1 1 1000 ( ) 199 100 × 1000 100 1

Two, careful scrutiny, careful analysis (5 points)

(1) 1 m 79 is as long as 7m 19. ( )

(2) The number A is more than the number B 10%, that is, the number B is less than the number A 10%. ( )

(3) The product of natural number multiplied by false fraction must be greater than this number. ( )

(4) The reciprocal of all integers is less than itself. ( )

(5) Both oil yield and powder yield will not exceed 100% ()

Three, repeated comparison, careful choice (number in parentheses) (10)

(1)0.4 km can be written as ()

A, 40% km b,15km c, 400m d, 25m.

(2) During the "Eleventh" National Day, the children's books in Xinhua Bookstore are 15% off, that is, the price is reduced ()

a、95% B、5% C、 15% D、 105%

(3) If the number of 8 is less than 3 16, 80 is ()

a、 13 12 B、 16 12 C、7 D、23

(4) Put 30g of salt into120g of water. Salt accounts for () of brine.

a、25% B、80% C、70% D、20%

(5)a is a natural number greater than zero, so the largest number in the following categories is ()

a、a× 56 B、a÷ 56 C、56 \a D、56 ×a

Fourth, pay attention to examination and be careful.

1, write the number directly (5 points)

2, calculation, how to calculate how simple (18 points)

( 1)3 15 × 156 × 38 (2) 252528 × 4

(3)7 10 ÷ 10 + 7 10 (4) ( 29 +227 )×27

(5) 157 × 5.6 + 45 (6)35 × 13 10 × 3 172 1

3, solve the equation (6 points)

Five, column calculation (9 points)

(1) What is the product of the difference between 56 and 38 multiplied by 48? (2) How much is 15 of 240 less than 5 12?

(3) The number A is 60% of the number B, and the number A is 2520. What is the number b? (Equation solving)

Six, solve the problem (25 points)

(1) Juck Zhang reads a 240-page story book, and reads the total pages of 1 12 every day. Do you know how many pages he can read in three days?

(2) A rectangular piece of land is 49 meters long and 57 meters wide. What is the area of this land?

(3) Xiaoming rides a bike for 2 hours, with a journey of 38 kilometers. At this speed, Xiao Ming rode 15 minutes from home to school. How far is it from home to school?

(4) Aunt Wang bought 5,000 yuan of three-year treasury bonds with an annual interest rate of 3.4%. How much interest can she get when she matures?

(5) A new flour mill that grinds 56 tons per hour. How many tons can three such mills grind in 45 hours?

Iii. Development issues (10 score)

a、 195 195 196÷ 195 =() 195÷ 195 195 196 =()

b、 1 1×2+ 12×3+ 13×4+……+ 198×99+ 199× 100 =()