Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 4 - 711 = _____
- 537 - 121 = _____
- 925 - 3120 = _____
- 6221 - 67 = _____
(a)
4 -
711 = 3
1111 -
711 = 3
411 (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.
9
25 - 3
120 = 9
2 x 45 x 4 - 3
120 = 9
820 - 3
120 = 6
720 (d)
Make the denominators the same.
6
221 -
67 = 6
221 -
6 x 37 x 3 = 5
2321 -
1821 = 5
521Answer(s): 3
411, 5
821, 6
720, 5
521