Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 4 - 12 = _____
- 345 - 110 = _____
- 835 - 1310 = _____
- 3314 - 67 = _____
(a)
4 -
12 = 3
22 -
12 = 3
12 (b)
Make the denominators the same.
3
45 -
110 = 3
4 x 25 x 2 -
110 = 3
810 -
110 = 3
710 (c)
Make the denominators the same.
8
35 - 1
310 = 8
3 x 25 x 2 - 1
310 = 8
610 - 1
310 = 7
310 (d)
Make the denominators the same.
3
314 -
67 = 3
314 -
6 x 27 x 2 = 2
1714 -
1214 = 2
514Answer(s): 3
12, 3
710, 7
310, 2
514