Complete the following number patterns.
- 793, 717, 641, , 489
- 32, 37, 43, 50, .
- 105, , 117, 121, 123
(a)
793 - 717 = 76
717 - 641 = 76
641 - 76 = 565
Pattern: Keep subtracting 76 from left to right.
(b)
37 - 32 = 5
43 - 37 = 6 (1 is added to 5)
50 - 43 = 7 (1 is added to 6)
7 + 1 = 8
50 + 8 = 58
Pattern: Keep adding 1 to the previous added number from left to right.
(c)
123 - 121 = 2
121 - 117 = 4
117 - 6 = 111
111 - 6 = 105
Pattern: Keep subtracting 2 from the previous subtracted number from right to left.
Answer(s): (a) 565; (b) 58; (c) 111
