Find the following values without a calculator.
Give your answers in this manner. (Eg
12,
23,
34,
45)
- 4 - 411 = _____
- 5210 - 140 = _____
- 535 - 1115 = _____
- 5221 - 57 = _____
(a)
4 -
411 = 3
1111 -
411 = 3
711 (b)
Make the denominators the same.
5
210 -
140 = 5
2 x 410 x 4 -
140 = 5
840 -
140 = 5
740 (c)
Make the denominators the same.
5
35 - 1
115 = 5
3 x 35 x 3 - 1
115 = 5
915 - 1
115 = 4
815 (d)
Make the denominators the same.
5
221 -
57 = 5
221 -
5 x 37 x 3 = 4
2321 -
1521 = 4
821Answer(s): 3
711, 5
740, 4
815, 4
821