Page 27 - 新思维数学活动用书6 样章

2 Numbers and sequences

5 Annie and Heidi play a game of ‘What’s my number’.

Annie says Heidi replies

Is the number less than 50? No

Is the number more than 100? No

Is the number a cube number? Yes

What is the number?

Practice

6 A number is squared and then 2 is added.

The answer is 6.

What is the number?

7 Calculate.

a 1 × 1 = b 5 × 5 =
2
2

2
c 3 × 3 = d 4 × 4 =
2

What do you notice about all your answers?

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