Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 5 - 14 = _____
- 425 - 110 = _____
- 924 - 238 = _____
- 7121 - 67 = _____
(a)
5 -
14 = 4
44 -
14 = 4
34 (b)
Make the denominators the same.
4
25 -
110 = 4
2 x 25 x 2 -
110 = 4
410 -
110 = 4
310 (c)
Make the denominators the same.
9
24 - 2
38 = 9
2 x 24 x 2 - 2
38 = 9
48 - 2
38 = 7
18 (d)
Make the denominators the same.
7
121 -
67 = 7
121 -
6 x 37 x 3 = 6
2221 -
1821 = 6
421Answer(s): 4
34, 4
310, 7
18, 6
421