Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 4 - 57 = _____
- 537 - 121 = _____
- 615 - 5120 = _____
- 3221 - 57 = _____
(a)
4 -
57 = 3
77 -
57 = 3
27 (b)
Make the denominators the same.
5
37 -
121 = 5
3 x 37 x 3 -
121 = 5
921 -
121 = 5
821 (c)
Make the denominators the same.
6
15 - 5
120 = 6
1 x 45 x 4 - 5
120 = 6
420 - 5
120 = 1
320 (d)
Make the denominators the same.
3
221 -
57 = 3
221 -
5 x 37 x 3 = 2
2321 -
1521 = 2
821Answer(s): 3
27, 5
821, 1
320, 2
821