Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 23 = ?18
- 45 = 8?
- 12 = 714 = ?98
- 15 = 210 = 5?
(a)
23 =
2 x 63 x 6 =
1218 (b)
45 =
4 x 25 x 2 =
810 (c)
12 =
714 =
7 x 714 x 7 =
4998 (d)
15 =
210 =
1 x 55 x 5 =
525Answer(s): 12, 10, 49, 25