Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 6 - 35 = _____
- 445 - 115 = _____
- 525 - 2120 = _____
- 7115 - 45 = _____
(a)
6 -
35 = 5
55 -
35 = 5
25 (b)
Make the denominators the same.
4
45 -
115 = 4
4 x 35 x 3 -
115 = 4
1215 -
115 = 4
1115 (c)
Make the denominators the same.
5
25 - 2
120 = 5
2 x 45 x 4 - 2
120 = 5
820 - 2
120 = 3
720 (d)
Make the denominators the same.
7
115 -
45 = 7
115 -
4 x 35 x 3 = 6
1615 -
1215 = 6
415Answer(s): 5
25, 4
1115, 3
720, 6
415