Look at the two sums shaded in the addition table. Why are the sums the same? 1) because 9 is greater
than 5
4
7
8
1) because
4.
5 x 9 = 9 X 5
2.
4.
4.
because
5 + 9 = 9+5
+012 3 4 5 6 7 8 9 10
0 0 1 2 3 56
9 10
1 1 2. 3 5 6 7 8 9 10 11
2 3 5 6 7 8 9 10 11 12
3 3 5 6 7 8 9 10 11 12 13
6 7 8 9 10 11 12 13 14
7 8 9 10 11 12 13 14 15
6 6 7 8 9 10 11 12 13 14 15 16
7 7 8 9 10 11 12 13 14 15 16 17
8 8 9 10 11 12 13 14 15 16 17 18
4
4.
5
5
5
6
because 5 and 9 are
both odd numbers
6
7
9
9 9 10 11 12 13 14 15 16 17 18 19
10 1 11
12.12.14
LA1110 120
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