Complete the following number patterns.
- 740, 648, 556, , 372
- 46, 54, 63, 73, .
- 175, , 191, 196, 199
(a)
740 - 648 = 92
648 - 556 = 92
556 - 92 = 464
Pattern: Keep subtracting 92 from left to right.
(b)
54 - 46 = 8
63 - 54 = 9 (1 is added to 8)
73 - 63 = 10 (1 is added to 9)
10 + 1 = 11
73 + 11 = 84
Pattern: Keep adding 1 to the previous added number from left to right.
(c)
199 - 196 = 3
196 - 191 = 5
191 - 7 = 184
184 - 9 = 175
Pattern: Keep subtracting 2 from the previous subtracted number from right to left.
Answer(s): (a) 464; (b) 84; (c) 184
