Page 240 - NUMINO TG_2A

15Counting in Groups Unit

CMath Vo abulary equal groups: the same number of objects are present in each group

2 Skip-count and fill in the blanks. 2. Have students fill in the blanks by skip-
counting by a certain number. For students
a 20 30 40 60 70 80 90 100 who are finding it difficult to find the missing
10 50 numbers through skip-counting, instruct them
in the following way.
b Example: 2e.
5
10 15 20 25 30 35 40 45 50 4 12 24 28 36

c 4 6 14 16 18 20 Find the difference between 2 consecutive
2 12 numbers. The consecutive numbers are 24
and 28, so the difference is 28 24 4.
8 10 Fill in the blanks by skip-counting by the
value found.

+4

4 8 12 16 20 24 28 32 36 40

d 3. Check Point
3 6 9 12 15 18 21 24 27 30

e 8 12 16 20 24 28 32 36 40 Skip-counting will help students easily
4 approach the multiplication table, which will be
covered later.

f 14 21 28 35 42 49 56 63 70
7

15. Counting in Groups 137

2A Unit 15 223