Let’s Recap Complete these: 1 +
= 10 2 +
= 10 3 +
= 10 4 +
= 10
Ten and twenty Start Thinking
How many different ways can you make 20?
Let’s Learn Together
6 +
= 20
6 +
= 10
16 +
= 20
= 20
7 +
7 +
10
17 +
= 20
= 20
8 +
8 +
= 10
18 +
= 20
9 +
= 20
9 +
= 10
19 +
= 20
So if I know 10, I also know 20.
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