Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 9 - 89 = _____
- 339 - 127 = _____
- 812 - 418 = _____
- 8221 - 57 = _____
(a)
9 -
89 = 8
99 -
89 = 8
19 (b)
Make the denominators the same.
3
39 -
127 = 3
3 x 39 x 3 -
127 = 3
927 -
127 = 3
827 (c)
Make the denominators the same.
8
12 - 4
18 = 8
1 x 42 x 4 - 4
18 = 8
48 - 4
18 = 4
38 (d)
Make the denominators the same.
8
221 -
57 = 8
221 -
5 x 37 x 3 = 7
2321 -
1521 = 7
821Answer(s): 8
19, 3
827, 4
38, 7
821