Find the following values without a calculator.
Give your answers in this manner. (Eg
12,
23,
34,
45)
- 7 - 78 = _____
- 526 - 124 = _____
- 723 - 236 = _____
- 9221 - 47 = _____
(a)
7 -
78 = 6
88 -
78 = 6
18 (b)
Make the denominators the same.
5
26 -
124 = 5
2 x 46 x 4 -
124 = 5
824 -
124 = 5
724 (c)
Make the denominators the same.
7
23 - 2
36 = 7
2 x 23 x 2 - 2
36 = 7
46 - 2
36 = 5
16 (d)
Make the denominators the same.
9
221 -
47 = 9
221 -
4 x 37 x 3 = 8
2321 -
1221 = 8
1121Answer(s): 6
18, 5
724, 5
16, 8
1121