Page 8 - 新思维数学学生用书9 样章
P. 8
1 Number and
calculation
Getting started
1 Write as a number:
a 12 2 b 81 c 5 3 d 3 64
2 2 = 256
8
Use this fact to work out the value of
a 2 9 b 2 7
3 Here is a multiplication: 15 × 15 2
5
a Write the correct answer from this list: 15 15 30 30 10
7
10
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b Write the answer to 15 ÷ 15 in index form.
2
5
3
4 Look at these numbers: 4 −4.5 3000 17 20 225
a Which of these numbers are integers?
b Which of these numbers are rational numbers?
5 Write one million as a power of 10.
7
