1 X 9 1 10

(i) 1 x 9 + 1 = 10 12 x 9 + 2 = 110 123 x 9 + 3 = 1110 (ii) 9 x 9 + 7 = 88 98 x 9 + 6 = 888 … 3 = 987 (iv) 111 3 = 37 222 6 = 37…

Answers:

(i) 1 x 9 + 1 = 10
12 x 9 + 2 = 110
123 x 9 + 3 = 1110
1234 x 9 + 4 = 11110
12345 x 9 + 5 = 111110
123456 x 9 + 6 = 1111110
(ii) 9 x 9 + 7 = 88
98 x 9 + 6 = 888
987 x 9 + 5 = 8888
9876 x 9 + 4 = 88888
98765 x 9 + 3 = 888888
987654 x 9 + 2 = 8888888
(iii) 1 x 8 + 1 = 9
12 x 8 + 2 = 98
123 x 8 + 3 = 987
1234 x 8 + 4 = 9876
12345 x 8 + = 98765
123456 x 8 + 6 = 987654
(iv) 111 ÷ 3 = 37
222 ÷ 6 = 37
333 ÷ 9 = 37
444 ÷ 12 =37
555 ÷ 15 = 37
666 ÷ 18 =37