Find the following values without a calculator.
Give your answers in this manner. (Eg
12,
23,
34,
45)
- 9 - 79 = _____
- 447 - 121 = _____
- 524 - 3112 = _____
- 3121 - 67 = _____
(a)
9 -
79 = 8
99 -
79 = 8
29 (b)
Make the denominators the same.
4
47 -
121 = 4
4 x 37 x 3 -
121 = 4
1221 -
121 = 4
1121 (c)
Make the denominators the same.
5
24 - 3
112 = 5
2 x 34 x 3 - 3
112 = 5
612 - 3
112 = 2
512 (d)
Make the denominators the same.
3
121 -
67 = 3
121 -
6 x 37 x 3 = 2
2221 -
1821 = 2
421Answer(s): 8
29, 4
1121, 2
512, 2
421