Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 3 - 17 = _____
- 238 - 116 = _____
- 523 - 329 = _____
- 7316 - 58 = _____
(a)
3 -
17 = 2
77 -
17 = 2
67 (b)
Make the denominators the same.
2
38 -
116 = 2
3 x 28 x 2 -
116 = 2
616 -
116 = 2
516 (c)
Make the denominators the same.
5
23 - 3
29 = 5
2 x 33 x 3 - 3
29 = 5
69 - 3
29 = 2
49 (d)
Make the denominators the same.
7
316 -
58 = 7
316 -
5 x 28 x 2 = 6
1916 -
1016 = 6
916Answer(s): 2
67, 2
516, 2
49, 6
916