Page 21 - 新思维数学活动用书2 样章
P. 21
1 Numbers to 100
1.3 Comparing and ordering
numbers close, closer
Exercise 1.3 extend a sequence ordering
Focus ordinal numbers sequence
Worked example 3
Estimate and show where 32 is on this number line.
0 10 20 30 40 50 60 70 80 90 100
Answer:
32 is 3 tens 32 is more
and 2 ones. than 30 but fewer
than 40.
32 is after 30 and close
to it, but not next to it – that
32 would be 31.
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