Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 23 = ?24
- 13 = 4?
- 57 = 1521 = ?63
- 12 = 24 = 9?
(a)
23 =
2 x 83 x 8 =
1624 (b)
13 =
1 x 43 x 4 =
412 (c)
57 =
1521 =
15 x 321 x 3 =
4563 (d)
12 =
24 =
1 x 92 x 9 =
918Answer(s): 16, 12, 45, 18