Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 47 = ?35
- 12 = 8?
- 12 = 714 = ?98
- 18 = 216 = 5?
(a)
47 =
4 x 57 x 5 =
2035 (b)
12 =
1 x 82 x 8 =
816 (c)
12 =
714 =
7 x 714 x 7 =
4998 (d)
18 =
216 =
1 x 58 x 5 =
540Answer(s): 20, 16, 49, 40