1. 18-2×6, calculate () first, then ().

2.6÷3+3, first (), then ().

3. In the formula 6×(25-20), () should be calculated before ().

The difference between 4.50 and 20 is (), and then divide by 6 to get ().

The quotient of 5.42 divided by 6 is (). Add 19 to get ().

6.7×3=2 1, 2 1+35=56, and the two formulas are combined into one ().

7. fill in ">" in O. & lt or "=".

64÷8+8o 64÷ 1+8 24+ 12÷4O(24+ 12)÷4

5+25÷5O25÷5+5 2+6×8O(2+6)×8

Second, think carefully and choose correctly. (Fill in the serial number of the correct answer in brackets) (4 points)

1. Calculate 2 1+ 14÷7 () first.

a . 2 1+ 14 b . 14÷7 c . 2 1÷7

2.67-9×3=8×( )

A.5 B.6 C.7

3.36- 18÷9 and (36- 18)÷9 Operation sequence ()

A. Same B. Different C. Uncertainty

4.4× 8 = 32,32-16 =16, which are combined into a formula ().

a . 4××8- 16 b . 16+4×8 c . 32-4×8

3. Is the following calculation correct? Correcting mistakes. (12)

8+ 16÷8 correction: 40- 15×2 correction:

=24÷8 =25×2

=3 =50

40-30÷5 correction 42-(22+9) correction:

= 10÷5 =20+9

=2 =29

4. One family after another. (10)

14+2×4 7×5-30 6 1-5×9 30+ 15÷3 22+8×3

46 22 5 16 35

Verb (abbreviation for verb) calculation. (24 points)

1. Calculate the following problem. (12)

(48-39)×8 48+8 1÷9 94-7×9

6×8-24 9-8 1÷9 (79-25)÷6

2. Column calculation. (12)

What is the quotient of (1)78 minus 14 divided by 8? (4 points)

(2) Divide 36 into 6 parts and add 29. What's the total? (4 points)

(3) A number multiplied by 5 times 13 equals 48. What is the number? (4 points)

Intransitive verbs solve problems. (35 points)

1. The store delivered 7 boxes of chalk, each containing 8 pieces, including 30 boxes of white chalk and the rest of colored chalk. How many boxes of colored chalk are there? (5 points)

2.* Show Happy and Big Big Wolf, one adult ticket for 25 yuan and three children tickets for 27 yuan. How much is an adult ticket more expensive than a child ticket? (8 points)

Miss Wang bought six bottles of red ink with 24 yuan, and Xiaolan bought a bottle of blue ink with 5 yuan. What kind of ink is cheaper? How much cheaper is each bottle?

4. Bread 3 yuan, drink 6 yuan and biscuit 4 yuan (14 points).

(1) How much should Xiao Ming pay for four loaves of bread and a bottle of drink? (3 points)

(2) Xiao Ming has 20 yuan. How much should he get back after buying three packs of biscuits? (4 points)

(3) Liang Xiao bought 8 bottles of drinks and 5 loaves of bread with 60 yuan money. Did he bring enough money? (4 points)

(4) What other questions can you ask? (3 points)