Find the following values without a calculator.
Give your answers in this manner. (Eg
12,
23,
34,
45)
- 5 - 19 = _____
- 539 - 118 = _____
- 323 - 2112 = _____
- 8221 - 67 = _____
(a)
5 -
19 = 4
99 -
19 = 4
89 (b)
Make the denominators the same.
5
39 -
118 = 5
3 x 29 x 2 -
118 = 5
618 -
118 = 5
518 (c)
Make the denominators the same.
3
23 - 2
112 = 3
2 x 43 x 4 - 2
112 = 3
812 - 2
112 = 1
712 (d)
Make the denominators the same.
8
221 -
67 = 8
221 -
6 x 37 x 3 = 7
2321 -
1821 = 7
521Answer(s): 4
89, 5
518, 1
712, 7
521