Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 7 - 23 = _____
- 5410 - 130 = _____
- 523 - 119 = _____
- 4221 - 67 = _____
(a)
7 -
23 = 6
33 -
23 = 6
13 (b)
Make the denominators the same.
5
410 -
130 = 5
4 x 310 x 3 -
130 = 5
1230 -
130 = 5
1130 (c)
Make the denominators the same.
5
23 - 1
19 = 5
2 x 33 x 3 - 1
19 = 5
69 - 1
19 = 4
59 (d)
Make the denominators the same.
4
221 -
67 = 4
221 -
6 x 37 x 3 = 3
2321 -
1821 = 3
521Answer(s): 6
13, 5
1130, 4
59, 3
521