Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 8 - 211 = _____
- 436 - 124 = _____
- 524 - 218 = _____
- 4316 - 78 = _____
(a)
8 -
211 = 7
1111 -
211 = 7
911 (b)
Make the denominators the same.
4
36 -
124 = 4
3 x 46 x 4 -
124 = 4
1224 -
124 = 4
1124 (c)
Make the denominators the same.
5
24 - 2
18 = 5
2 x 24 x 2 - 2
18 = 5
48 - 2
18 = 3
38 (d)
Make the denominators the same.
4
316 -
78 = 4
316 -
7 x 28 x 2 = 3
1916 -
1416 = 3
516Answer(s): 7
911, 4
1124, 3
38, 3
516