Vandana spent 1 / 2 of her pocket money on a film and 1 / 4 on a new CD. What fraction of her allowance did she spend altogether?
1 / 2 = 4 / 8
1 / 4 = 2 / 8
1 / 2 + 1 / 4 = 4 / 8 + 2 / 8 =
6 / 8 = 2 • 3 / 2 • 4 = 3 / 4
1 / 4 = 2 / 8
1 / 2 + 1 / 4 = 4 / 8 + 2 / 8 =
6 / 8 = 2 • 3 / 2 • 4 = 3 / 4