Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 5 - 25 = _____
- 3210 - 140 = _____
- 925 - 4120 = _____
- 7115 - 45 = _____
(a)
5 -
25 = 4
55 -
25 = 4
35 (b)
Make the denominators the same.
3
210 -
140 = 3
2 x 410 x 4 -
140 = 3
840 -
140 = 3
740 (c)
Make the denominators the same.
9
25 - 4
120 = 9
2 x 45 x 4 - 4
120 = 9
820 - 4
120 = 5
720 (d)
Make the denominators the same.
7
115 -
45 = 7
115 -
4 x 35 x 3 = 6
1615 -
1215 = 6
415Answer(s): 4
35, 3
740, 5
720, 6
415