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Finding rules in the addition table
In the addition table, numbers 1 to 9 are written in the first row and in
the first column. Complete the table and find the rule.
1 Complete the table.
+1 2 3 4 5 6 7 8 9
13 6 89
23 11
34 9 10
45 10 13
5 12
6 8 9 10 14
79 12 13 15
8 10 11 17
9 10 14 16 17
42 Workbook A-4
In the addition table, numbers 1 to 9 are written in the first row and in
the first column. Complete the table and find the rule.
1 Complete the table.
+1 2 3 4 5 6 7 8 9
13 6 89
23 11
34 9 10
45 10 13
5 12
6 8 9 10 14
79 12 13 15
8 10 11 17
9 10 14 16 17
42 Workbook A-4
