Find the following values without a calculator.
Give your answers in this manner. (Eg
12,
23,
34,
45)
- 9 - 57 = _____
- 4410 - 130 = _____
- 725 - 5120 = _____
- 2314 - 67 = _____
(a)
9 -
57 = 8
77 -
57 = 8
27 (b)
Make the denominators the same.
4
410 -
130 = 4
4 x 310 x 3 -
130 = 4
1230 -
130 = 4
1130 (c)
Make the denominators the same.
7
25 - 5
120 = 7
2 x 45 x 4 - 5
120 = 7
820 - 5
120 = 2
720 (d)
Make the denominators the same.
2
314 -
67 = 2
314 -
6 x 27 x 2 = 1
1714 -
1214 = 1
514Answer(s): 8
27, 4
1130, 2
720, 1
514