Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 6 - 311 = _____
- 5210 - 120 = _____
- 723 - 229 = _____
- 7114 - 67 = _____
(a)
6 -
311 = 5
1111 -
311 = 5
811 (b)
Make the denominators the same.
5
210 -
120 = 5
2 x 210 x 2 -
120 = 5
420 -
120 = 5
320 (c)
Make the denominators the same.
7
23 - 2
29 = 7
2 x 33 x 3 - 2
29 = 7
69 - 2
29 = 5
49 (d)
Make the denominators the same.
7
114 -
67 = 7
114 -
6 x 27 x 2 = 6
1514 -
1214 = 6
314Answer(s): 5
811, 5
320, 5
49, 6
314