Calculation, mainly calculation, is actually quite simple, and the calculation will come out. Remember to simplify it!

The answer on page 34. I'll write you some questions.

34. Application of ratio

Fill in the blanks

( 1) 15/8 15/7

(2)30 60 90

(3)3:4 7/3 7/4

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Two. (I'll just write a little)

( 1)

Ask for class one, they each have 60 copies, and the competition is 2: 3.

One is 60 times 2+3/3 = 24.

Class two will do!

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The second question is the same as the first, so I won't write it.

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(3)

95 ÷ 5× 4 = 76 (ton)

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(4)

25× 2 = 50 kg

One: 50× 2+3/2 = 20 (kg)

Two: (second, ask for it yourself)

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Mathematics paradise

4×3/2:5

The answer is 8: 15.