3 × 20 - 4 × 10 = 60 - 40 = 20
5 × 30 + 10 ÷ 2 = 150 + 5 = 155
4 × 30 - 40 × 3 = 120 - 120 = 0
50 × 5 + 0 ÷ 5 = 250 + 0 = 250
(75 + 25) ÷ 100 = 100 ÷ 100 = 1
(30 + 40) × 10 = 70 × 10 = 700
3 × 20 - 4 × 10 = 60 - 40 = 20
5 × 30 + 10 ÷ 2 = 150 + 5 = 155
4 × 30 - 40 × 3 = 120 - 120 = 0
50 × 5 + 0 ÷ 5 = 250 + 0 = 250
(75 + 25) ÷ 100 = 100 ÷ 100 = 1
(30 + 40) × 10 = 70 × 10 = 700