Primary School Mathematics Comprehensive Calculation Questions, Primary School Mathematics Calculati

1.Oral arithmetic. 1) (2)

2.Equation. 1) (2)

5)5x+7=62 (6)3x+24+18=2407)5x=63-18 (8)x÷4+3=

9)12(x+ 114 (10)6=3x-x3.Off-line calculations.

1）（3）1285x(

4）5）65÷(65x125-66)=

2、 (1)

2)12-2x=

3)2(6+x)

4) More than 25 of x, find x.

5) Subtract the difference in removal, what is this number?

6) A number is more than 55 in 3 5 and 10, what is this number?

7)12x＋7×30%=

8)9)x:3/4=19/2*6

10): x5) 658 32 25 + ( 78 65 ) What is this number.

2)3/x=4/5

3)2(6+x)

4)5x-2x=7

5)1/3 x+1/2x=9

6）13/12 x-11/12=10

7)12x＋7×30%=

8)9)x:3/4=19/2*6

10):x

Original = (4/5 + 4 times 31/24) divided by 2 = (179/30) divided by 2 = 179/60

Be patient and attentive!

The sum of the three numbers A, B and C is 40x3=120

A120 (4 7 9) 4 24

B 120 (4 7 9) 7 42

C 120 (4 7 9) 9 = 54

If the average number is 40, then the sum of A, B and C is 120, then: A = 120 times (4 20) = 24 B = 120 times (7 20) = 42 C = 120 times (9 20) = 54

40x3=120 calculates the total, and 120 (4+7+9)=6 calculates a number 6 x4=24

B 6x7 = 42

C 6x9 = 54

The check is 24 + 42 + 54 = 120

I'm in 6th grade, what's not going to contact me!

。。。Don't you set x?。。。 Let A be four parts, already 7 parts, C is nine parts, one part is 40 divided by (4 plus 7 plus 9) equals 2, so A is equal to 4 times 2 equals 8, has been 14, C is 18.