Page 12 - 新思维数学活动用书6 样章
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1.1 Place value
14 Four students Anton, Ben, Kasinda and Anya each think of a number.
The numbers are 45, 4.5, 0.45 and 0.045.
Use these clues to work out which number each student is thinking of.
• Ben’s number is a thousand times smaller than Kasinda’s number.
• Anton’s number is ten times smaller than Kasinda’s number.
• Anya’s number is ten times bigger than Ben’s number.
Anton’s number is . Ben’s number is .
Kasinda’s number is . Anya’s number is .
15 Leila says, ‘The number represented in this place value grid is the largest number
that can be made with nine counters.’
Do you agree?
Explain your reasoning.
1
1
1
10s 1s 10 s 100 s 1000 s
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