Find the following values without a calculator.
Give your answers in this manner. (Eg
12,
23,
34,
45)
- 8 - 512 = _____
- 425 - 110 = _____
- 415 - 3115 = _____
- 6110 - 45 = _____
(a)
8 -
512 = 7
1212 -
512 = 7
712 (b)
Make the denominators the same.
4
25 -
110 = 4
2 x 25 x 2 -
110 = 4
410 -
110 = 4
310 (c)
Make the denominators the same.
4
15 - 3
115 = 4
1 x 35 x 3 - 3
115 = 4
315 - 3
115 = 1
215 (d)
Make the denominators the same.
6
110 -
45 = 6
110 -
4 x 25 x 2 = 5
1110 -
810 = 5
310Answer(s): 7
712, 4
310, 1
215, 5
310