Complete the following number patterns.
- 732, 633, 534, , 336
- 50, 56, 63, 71, .
- 91, , 107, 114, 119
(a)
732 - 633 = 99
633 - 534 = 99
534 - 99 = 435
Pattern: Keep subtracting 99 from left to right.
(b)
56 - 50 = 6
63 - 56 = 7 (1 is added to 6)
71 - 63 = 8 (1 is added to 7)
8 + 1 = 9
71 + 9 = 80
Pattern: Keep adding 1 to the previous added number from left to right.
(c)
119 - 114 = 5
114 - 107 = 7
107 - 9 = 98
98 - 7 = 91
Pattern: Keep subtracting 2 from the previous subtracted number from right to left.
Answer(s): (a) 435; (b) 80; (c) 98
