Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 4 - 512 = _____
- 249 - 118 = _____
- 713 - 529 = _____
- 6221 - 67 = _____
(a)
4 -
512 = 3
1212 -
512 = 3
712 (b)
Make the denominators the same.
2
49 -
118 = 2
4 x 29 x 2 -
118 = 2
818 -
118 = 2
718 (c)
Make the denominators the same.
7
13 - 5
29 = 7
1 x 33 x 3 - 5
29 = 7
39 - 5
29 = 2
19 (d)
Make the denominators the same.
6
221 -
67 = 6
221 -
6 x 37 x 3 = 5
2321 -
1821 = 5
521Answer(s): 3
712, 2
718, 2
19, 5
521