Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 38 = ?72
- 12 = 9?
- 13 = 412 = ?48
- 14 = 28 = 3?
(a)
38 =
3 x 98 x 9 =
2772 (b)
12 =
1 x 92 x 9 =
918 (c)
13 =
412 =
4 x 412 x 4 =
1648 (d)
14 =
28 =
1 x 34 x 3 =
312Answer(s): 27, 18, 16, 12