Find the following values without a calculator.
Give your answers in this manner. (Eg
12,
23,
34,
45)
- 2 - 37 = _____
- 437 - 121 = _____
- 423 - 119 = _____
- 7116 - 78 = _____
(a)
2 -
37 = 1
77 -
37 = 1
47 (b)
Make the denominators the same.
4
37 -
121 = 4
3 x 37 x 3 -
121 = 4
921 -
121 = 4
821 (c)
Make the denominators the same.
4
23 - 1
19 = 4
2 x 33 x 3 - 1
19 = 4
69 - 1
19 = 3
59 (d)
Make the denominators the same.
7
116 -
78 = 7
116 -
7 x 28 x 2 = 6
1716 -
1416 = 6
316Answer(s): 1
47, 4
821, 3
59, 6
316