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Five answers to the math test paper
1、? There are four odd numbers? What are they? 1、23、9 1、7)? Even number? Two? What is the difference? 0、 18?

There are two prime numbers? What are they? 23、7? Note: 1 and 0 are not prime numbers or composite numbers)? What is a composite number? 2 (18, 9 1? Among them? 9 1=7* 13)

Note: Prime numbers, composite numbers, odd numbers and even numbers are all natural numbers (natural number collection of symbols: n).

2. Each section is 5/6m long and 5m 1/6.

3.2115+7115, which means 2/15+7/15 = 9/15 = 3/5.

4. What is the maximum quantity? 6/7(6/7≈0.857 1)? The smallest number is 2/3(≈0.6667)? 4/5 is equal to 0.8.

5. Surface area = 8 * 4.4 * 2+8 * 5 * 2+5 * 4.4 * 2 =194.4 m2 (194.4=972/5).

Volume =8*5*4.4= 176 cubic meters