Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 3 - 67 = _____
- 339 - 127 = _____
- 834 - 118 = _____
- 8221 - 67 = _____
(a)
3 -
67 = 2
77 -
67 = 2
17 (b)
Make the denominators the same.
3
39 -
127 = 3
3 x 39 x 3 -
127 = 3
927 -
127 = 3
827 (c)
Make the denominators the same.
8
34 - 1
18 = 8
3 x 24 x 2 - 1
18 = 8
68 - 1
18 = 7
58 (d)
Make the denominators the same.
8
221 -
67 = 8
221 -
6 x 37 x 3 = 7
2321 -
1821 = 7
521Answer(s): 2
17, 3
827, 7
58, 7
521