Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 2 - 89 = _____
- 229 - 127 = _____
- 715 - 2115 = _____
- 8121 - 47 = _____
(a)
2 -
89 = 1
99 -
89 = 1
19 (b)
Make the denominators the same.
2
29 -
127 = 2
2 x 39 x 3 -
127 = 2
627 -
127 = 2
527 (c)
Make the denominators the same.
7
15 - 2
115 = 7
1 x 35 x 3 - 2
115 = 7
315 - 2
115 = 5
215 (d)
Make the denominators the same.
8
121 -
47 = 8
121 -
4 x 37 x 3 = 7
2221 -
1221 = 7
1021Answer(s): 1
19, 2
527, 5
215, 7
1021