1. Choose the correct answer and fill in ().
( 1)72-32÷8=( )。
①5
②68
③32
8 is () times that of 4.
①2
②32
③4
(3) The formula for numbers greater than 40 is ().
①24+ 12
②6×8
③72÷9
④30+ 10
⑤79- 12
⑥57+24
2. There are no brackets in an expression, only addition, subtraction, multiplication and division, which should be calculated in the order of ().
A. Add and subtract first, then multiply and divide.
B. From left to right
The calculation process of 3.8×(6+3) is correct: ()
A.8×(6+3)b . 8×(6+3)c . 8×(6+3)d . 8×(6+3)
=48+3 =9×8 =9 =8×9
=5 1 =72 =72 =72
Second, fill in the blanks.
1. Fill in the appropriate numbers in the brackets of the following questions.
( 1)( )+9×5= 100
(2)( )×7+60= 100
The product of 2.3 and 8 is _ _ _ _ _ _, and then divided by 4 to get _ _ _ _ _ _, the comprehensive formula ().
3. In division with remainder, the remainder must be greater than the divisor ().
4. How much can I put in ()?
3×()& lt； 16()×5 & lt； 4 1 6×()& lt； 33
4×()& lt； 25()×7 & lt； 67 8×()& lt； 50
5. Fill in ">" in ○. , "<, or" = ".
2×( 14-8)○ 12 (7-5)×6○23
Third, the calculation problem.
1. Write two formulas calculated step by step into one formula.
( 1)7×3=2 1 40+2 1=6 1
(2)36÷6=6 80-6=74
2. Column calculation.
What is the sum of (1)57 minus 28 and () plus 7 1?
(2) Multiplier is 3, multiplier is 6, product is (), plus 29, how much do you get?
(3) Divider and divisor are both 4, quotient is (), multiplied by 8, what is the product?
(4) Divide 63 by 9, quotient () and subtract 7 to get ().
3. Calculate the following questions.
(1) vertical calculation.
24÷6= 35÷7=
49÷8= 70÷9=
(2) Calculation of parting.
12+ 15÷3 ( 12+ 15)÷3 9×(56÷7)
(35+37)÷9 4×( 16-9) 57-( 1 1+27)
Fourth, find the right direction and route.
1, look for the direction.
The rectangle is on the () surface of the five-pointed star, and the triangle is on the () surface of the five-pointed star.
The circle is on the () surface of the square and the cylinder is on the () surface of the trapezoid.
The pentagram is on the () surface of the hexagon.
2. Determine the direction and route.
Xiaolong's home is () stop from the library. Xiaolong passed () station from home to the hospital.
Xiaolong started from home and headed for the swimming pool in the direction of () to () station.
Xiaolong came out of the swimming pool and headed for the stadium in the direction of ().