Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 3 - 1011 = _____
- 4210 - 120 = _____
- 724 - 518 = _____
- 4114 - 67 = _____
(a)
3 -
1011 = 2
1111 -
1011 = 2
111 (b)
Make the denominators the same.
4
210 -
120 = 4
2 x 210 x 2 -
120 = 4
420 -
120 = 4
320 (c)
Make the denominators the same.
7
24 - 5
18 = 7
2 x 24 x 2 - 5
18 = 7
48 - 5
18 = 2
38 (d)
Make the denominators the same.
4
114 -
67 = 4
114 -
6 x 27 x 2 = 3
1514 -
1214 = 3
314Answer(s): 2
111, 4
320, 2
38, 3
314