Find the following values without a calculator.
Give your answers in this manner. (Eg
12,
23,
34,
45)
- 2 - 511 = _____
- 2410 - 120 = _____
- 834 - 5212 = _____
- 4114 - 57 = _____
(a)
2 -
511 = 1
1111 -
511 = 1
611 (b)
Make the denominators the same.
2
410 -
120 = 2
4 x 210 x 2 -
120 = 2
820 -
120 = 2
720 (c)
Make the denominators the same.
8
34 - 5
212 = 8
3 x 34 x 3 - 5
212 = 8
912 - 5
212 = 3
712 (d)
Make the denominators the same.
4
114 -
57 = 4
114 -
5 x 27 x 2 = 3
1514 -
1014 = 3
514Answer(s): 1
611, 2
720, 3
712, 3
514