Page 17 - 新思维数学活动用书3 样章
P. 17
1 Numbers to 1000
1.3 Estimating and rounding
Exercise 1.3
Focus estimate range
1 Estimate how many dots there are in the box. round, rounding
2 Estimate how many grains of rice are on the middle spoon.
estimate: 100 – 200
estimate:
estimate: 400 – 600
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