Find the following values without a calculator.
Give your answers in this manner. (Eg
12,
23,
34,
45)
- 5 - 23 = _____
- 439 - 127 = _____
- 635 - 2310 = _____
- 7121 - 47 = _____
(a)
5 -
23 = 4
33 -
23 = 4
13 (b)
Make the denominators the same.
4
39 -
127 = 4
3 x 39 x 3 -
127 = 4
927 -
127 = 4
827 (c)
Make the denominators the same.
6
35 - 2
310 = 6
3 x 25 x 2 - 2
310 = 6
610 - 2
310 = 4
310 (d)
Make the denominators the same.
7
121 -
47 = 7
121 -
4 x 37 x 3 = 6
2221 -
1221 = 6
1021Answer(s): 4
13, 4
827, 4
310, 6
1021