Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 5 - 13 = _____
- 348 - 116 = _____
- 625 - 2215 = _____
- 4121 - 67 = _____
(a)
5 -
13 = 4
33 -
13 = 4
23 (b)
Make the denominators the same.
3
48 -
116 = 3
4 x 28 x 2 -
116 = 3
816 -
116 = 3
716 (c)
Make the denominators the same.
6
25 - 2
215 = 6
2 x 35 x 3 - 2
215 = 6
615 - 2
215 = 4
415 (d)
Make the denominators the same.
4
121 -
67 = 4
121 -
6 x 37 x 3 = 3
2221 -
1821 = 3
421Answer(s): 4
23, 3
716, 4
415, 3
421