Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 6 - 611 = _____
- 3210 - 140 = _____
- 715 - 3320 = _____
- 6221 - 57 = _____
(a)
6 -
611 = 5
1111 -
611 = 5
511 (b)
Make the denominators the same.
3
210 -
140 = 3
2 x 410 x 4 -
140 = 3
840 -
140 = 3
740 (c)
Make the denominators the same.
7
15 - 3
320 = 7
1 x 45 x 4 - 3
320 = 7
420 - 3
320 = 4
120 (d)
Make the denominators the same.
6
221 -
57 = 6
221 -
5 x 37 x 3 = 5
2321 -
1521 = 5
821Answer(s): 5
511, 3
740, 4
120, 5
821