Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 8 - 12 = _____
- 549 - 127 = _____
- 712 - 238 = _____
- 2116 - 58 = _____
(a)
8 -
12 = 7
22 -
12 = 7
12 (b)
Make the denominators the same.
5
49 -
127 = 5
4 x 39 x 3 -
127 = 5
1227 -
127 = 5
1127 (c)
Make the denominators the same.
7
12 - 2
38 = 7
1 x 42 x 4 - 2
38 = 7
48 - 2
38 = 5
18 (d)
Make the denominators the same.
2
116 -
58 = 2
116 -
5 x 28 x 2 = 1
1716 -
1016 = 1
716Answer(s): 7
12, 5
1127, 5
18, 1
716