How to do the third question on page 106 of the fifth grade math book? Thank you for reminding me. Be sure to explain the version used in your area, such as People's Education Edition, Soviet Education Edition, or Beijing Normal University Edition, so as to get the answer. It is difficult to get an answer to this question, because the version used in each place is different, so the answer of the book is different. I hope you can add more information and get the answer you want.

How to do the third question on page 75 of the fifth grade math book: jump x times per minute before exercise

X+55= 130

X=75

A: Jump 75 times per minute before exercise.

How to do the second question on page 94 of the fifth grade math book? Can be divided into three kinds of graphics:

1. Two right-angled trapeziums

2. By adding and supplementing, it can be divided into rectangle and triangle (subtraction).

3. Divide into 1 square and 2 triangles.

1 solution: (80-20+80) × 30 ÷ 2× 2 = (60+80) × 30 ÷ 2× 2.

= 140×30÷2×2

=4200÷2×2

=4200(cm？ )

2 solution:

80×(30+30)-(30+30)×20÷2

=80×60-60×20 ÷2

=4800- 1200÷2

=4800-600

=4200(cm？ )

3 solution:

(80-20)×(30+30)+30×20÷2×2

=60×60+30×20÷2×2

=3600+600÷2×2

=3600+600

=4200(cm？ )

A: Does it take 4200cm to make a team flag? Cloth.

How to do the 8* problem on page 87 of the first volume of fifth grade mathematics is PEP, right?

540×2÷ 18=60 (m)

540× 2 ÷ 22.5 = 48m

Circumference: (60+48)×2=2 16 (m)

540*2/22.5 equals 48.

540*2/ 18 equals 60.

(48+60)*2 equals 2 16.

How to do the problem of page 73 10 in the fifth grade math book? 35÷5-3=x

7-3 =x

X =4 (times)

How to do six questions on page 37 of the first volume of the fifth grade math book? Because the decimal point is a little to the right, the result is 24.6, so the correct quotient should be 24.6, and then calculate the divisor according to "divisor = dividend quotient"

3.69÷2.46= 1.5

How to divide 48 by 2 and divide it by 2= 12 (square meter) on page 87 of the fifth grade math book?

How to do the question 1 1 on page 64 of the first volume of the fifth grade math book? 1. Solution: Suppose a * * is equipped with an X tube.

5x+3= 1428

5x+3-3= 1428-3

5x= 1425

5x \5 = 1425 \5

x=285

A: One * * * has 285 tubes.

2. Solution: Let Tiananmen Square cover an area of X million square kilometers.

2x- 16=72

2x- 16+ 16 = 72- 16

2x=56

2x \2 = 56 \2

x=28

Tiananmen Square covers an area of 280,000 square kilometers.

3. Solution: Assume that the average annual precipitation in Tongxin County is x mm.

8x+ 109=2325

8x+ 109- 109 = 2325- 109

8x=22 16

8x \8 = 22 16 \8

x=277

A: The average annual precipitation in Tongxin County is 277mm.

The ninth problem on page 67 of the fifth grade math book, 4x plus 13=365 solution; X=365- 13 4x=352 x=352 divided by 4 x=88.