Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 8 - 811 = _____
- 326 - 118 = _____
- 315 - 1320 = _____
- 5316 - 78 = _____
(a)
8 -
811 = 7
1111 -
811 = 7
311 (b)
Make the denominators the same.
3
26 -
118 = 3
2 x 36 x 3 -
118 = 3
618 -
118 = 3
518 (c)
Make the denominators the same.
3
15 - 1
320 = 3
1 x 45 x 4 - 1
320 = 3
420 - 1
320 = 2
120 (d)
Make the denominators the same.
5
316 -
78 = 5
316 -
7 x 28 x 2 = 4
1916 -
1416 = 4
516Answer(s): 7
311, 3
518, 2
120, 4
516