Find the following values without a calculator.
Give your answers in this manner. (Eg
12,
23,
34,
45)
- 2 - 38 = _____
- 345 - 115 = _____
- 835 - 3320 = _____
- 8221 - 57 = _____
(a)
2 -
38 = 1
88 -
38 = 1
58 (b)
Make the denominators the same.
3
45 -
115 = 3
4 x 35 x 3 -
115 = 3
1215 -
115 = 3
1115 (c)
Make the denominators the same.
8
35 - 3
320 = 8
3 x 45 x 4 - 3
320 = 8
1220 - 3
320 = 5
920 (d)
Make the denominators the same.
8
221 -
57 = 8
221 -
5 x 37 x 3 = 7
2321 -
1521 = 7
821Answer(s): 1
58, 3
1115, 5
920, 7
821