Complete the following number patterns.
- 758, 705, 652, , 546
- 47, 52, 58, 65, .
- 152, , 165, 170, 173
(a)
758 - 705 = 53
705 - 652 = 53
652 - 53 = 599
Pattern: Keep subtracting 53 from left to right.
(b)
52 - 47 = 5
58 - 52 = 6 (1 is added to 5)
65 - 58 = 7 (1 is added to 6)
7 + 1 = 8
65 + 8 = 73
Pattern: Keep adding 1 to the previous added number from left to right.
(c)
173 - 170 = 3
170 - 165 = 5
165 - 7 = 158
158 - 6 = 152
Pattern: Keep subtracting 2 from the previous subtracted number from right to left.
Answer(s): (a) 599; (b) 73; (c) 158
