Page 26 - 新思维数学活动用书6 样章

2.2 Special numbers

Exercise 2.2

Focus

1 Calculate.

a 1 = b 5 =
2
3

2
c 9 = d 1 =
3

2 What is the sum of the third square number and the fifth square number?

3 What is the difference between the tenth square number and the fourth square

number?

4 Draw a ring around the expressions that are equal to 6².

6 × 2 6 × 6 6 + 6

2 × 2 × 2 × 2 × 2 × 2 6 + 6 + 6 + 6 + 6 + 6

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