Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 2 - 89 = _____
- 335 - 115 = _____
- 515 - 3120 = _____
- 8221 - 67 = _____
(a)
2 -
89 = 1
99 -
89 = 1
19 (b)
Make the denominators the same.
3
35 -
115 = 3
3 x 35 x 3 -
115 = 3
915 -
115 = 3
815 (c)
Make the denominators the same.
5
15 - 3
120 = 5
1 x 45 x 4 - 3
120 = 5
420 - 3
120 = 2
320 (d)
Make the denominators the same.
8
221 -
67 = 8
221 -
6 x 37 x 3 = 7
2321 -
1821 = 7
521Answer(s): 1
19, 3
815, 2
320, 7
521