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Addition strategies: almost neighbours
When the numbers are 2 apart on a number line, go to the number in the middle of them and double it
18 cards·by kassy4
mathaddition
2+4
6
4+2
6
3+5
8
5+3
8
4+6
10
6+4
10
5+7
12
7+5
12
8+6
14
6+8
14
7+9
16
9+7
16
8+10
18
10+8
18
9+11
20
11+9
20
12+10
22
10+12
22