Find the following values without a calculator.
Give your answers in this manner. (Eg 1
35, 3
25, 4
23, 5
67)
- 8 - 511 = _____
- 246 - 118 = _____
- 812 - 214 = _____
- 8316 - 78 = _____
(a)
8 -
511 = 7
1111 -
511 = 7
611 (b)
Make the denominators the same.
2
46 -
118 = 2
4 x 36 x 3 -
118 = 2
1218 -
118 = 2
1118 (c)
Make the denominators the same.
8
12 - 2
14 = 8
1 x 22 x 2 - 2
14 = 8
24 - 2
14 = 6
14 (d)
Make the denominators the same.
8
316 -
78 = 8
316 -
7 x 28 x 2 = 7
1916 -
1416 = 7
516Answer(s): 7
611, 2
1118, 6
14, 7
516