Find the following values without a calculator.
Give your answers in this manner. (Eg
12,
23,
34,
45)
- 2 - 35 = _____
- 347 - 121 = _____
- 913 - 329 = _____
- 2115 - 45 = _____
(a)
2 -
35 = 1
55 -
35 = 1
25 (b)
Make the denominators the same.
3
47 -
121 = 3
4 x 37 x 3 -
121 = 3
1221 -
121 = 3
1121 (c)
Make the denominators the same.
9
13 - 3
29 = 9
1 x 33 x 3 - 3
29 = 9
39 - 3
29 = 6
19 (d)
Make the denominators the same.
2
115 -
45 = 2
115 -
4 x 35 x 3 = 1
1615 -
1215 = 1
415Answer(s): 1
25, 3
1121, 6
19, 1
415