Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 3 - 511 = _____
- 447 - 121 = _____
- 724 - 338 = _____
- 5316 - 78 = _____
(a)
3 -
511 = 2
1111 -
511 = 2
611 (b)
Make the denominators the same.
4
47 -
121 = 4
4 x 37 x 3 -
121 = 4
1221 -
121 = 4
1121 (c)
Make the denominators the same.
7
24 - 3
38 = 7
2 x 24 x 2 - 3
38 = 7
48 - 3
38 = 4
18 (d)
Make the denominators the same.
5
316 -
78 = 5
316 -
7 x 28 x 2 = 4
1916 -
1416 = 4
516Answer(s): 2
611, 4
1121, 4
18, 4
516