Find the following values without a calculator.
Give your answers in this manner. (Eg
12,
23,
34,
45)
- 9 - 67 = _____
- 237 - 128 = _____
- 823 - 129 = _____
- 2221 - 47 = _____
(a)
9 -
67 = 8
77 -
67 = 8
17 (b)
Make the denominators the same.
2
37 -
128 = 2
3 x 47 x 4 -
128 = 2
1228 -
128 = 2
1128 (c)
Make the denominators the same.
8
23 - 1
29 = 8
2 x 33 x 3 - 1
29 = 8
69 - 1
29 = 7
49 (d)
Make the denominators the same.
2
221 -
47 = 2
221 -
4 x 37 x 3 = 1
2321 -
1221 = 1
1121Answer(s): 8
17, 2
1128, 7
49, 1
1121