Page 17 - 新思维数学活动用书2 样章
P. 17
1 Numbers to 100
5 How many cubes are in the collection?
Estimate then count to check.
Estimate
10 20 50 100
Count
Compare your estimate and count with another person’s.
Do you both agree?
6 Sofia counts 100 beads in twos.
Draw a ring around any numbers she said.
24 59 36 42 17 78 12
Practice
7 Write the tens numbers in order, from 100 to 10.
100 10
8 Marcus and Arun make some numbers.
Marcus chooses the tens. Arun chooses the ones.
They make 53 and 87.
How many tens does Marcus choose? and
How many ones does Arun choose? and
16
