Find the following values without a calculator.
Give your answers in this manner. (Eg
12,
23,
34,
45)
- 5 - 58 = _____
- 427 - 121 = _____
- 735 - 4115 = _____
- 5110 - 45 = _____
(a)
5 -
58 = 4
88 -
58 = 4
38 (b)
Make the denominators the same.
4
27 -
121 = 4
2 x 37 x 3 -
121 = 4
621 -
121 = 4
521 (c)
Make the denominators the same.
7
35 - 4
115 = 7
3 x 35 x 3 - 4
115 = 7
915 - 4
115 = 3
815 (d)
Make the denominators the same.
5
110 -
45 = 5
110 -
4 x 25 x 2 = 4
1110 -
810 = 4
310Answer(s): 4
38, 4
521, 3
815, 4
310