Question

выполните умножение 1 1/4×1 1/5

Answer 1

$1 frac{1}{4} * 1 frac{1}{5} = frac{5}{4}*frac{6}{5} = frac{1}{2} * 3 = frac{3}{2} = 1,5$

Answer 2

1 1/4 × 1 1/5 = 5/4 × 6/5 = 5 × 6 + 4×5 = 30/20 =
1 10/20 = 1 2/4 = 1 1/2