Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 4 - 712 = _____
- 225 - 120 = _____
- 624 - 238 = _____
- 4114 - 67 = _____
(a)
4 -
712 = 3
1212 -
712 = 3
512 (b)
Make the denominators the same.
2
25 -
120 = 2
2 x 45 x 4 -
120 = 2
820 -
120 = 2
720 (c)
Make the denominators the same.
6
24 - 2
38 = 6
2 x 24 x 2 - 2
38 = 6
48 - 2
38 = 4
18 (d)
Make the denominators the same.
4
114 -
67 = 4
114 -
6 x 27 x 2 = 3
1514 -
1214 = 3
314Answer(s): 3
512, 2
720, 4
18, 3
314