Add ones by bridging Let’s Learn Together
2
2 1
0
8 10 0
8 1011
8 + 2 = 10
So
8 + 3 = 11
2
2 1
10
18 20 10
18
21
18 + 2 = 20
So
18 + 3 = ?
2
2 1
20
28 30 20
28
31
28 + 2 = 30
So
…
I might draw a bar model to explain.
Let’s Try It Calculate these: 48 + 3 =
68 + 3 =
+ 3 = 91
Let’s Practise Complete these additions. 1 5 + 5 = 10 5 + 6 =
15 + 6 =
35 + 6 =
4 + 6 = 10 4 + 8 +
14 + 8 =
44 + 8 =
2
7 + 3 = 10 7 +
= 12 37 +
= 42 87 +
= 92
3
178
SK_G2_SB_13_178-181.indd 178
01/12/2021 14:08
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