Question

Tính:    

50 + 10 + 40                   34 + 8 – 12

100 – 80 + 70                 51 – 6 + 35

Answer 1

50 + 10 + 40 = 60 + 40 = 100

34 + 8 – 12 = 42 – 12 = 30

100 – 80 + 70 = 20 + 70 = 90

51 – 6 + 35 = 45 + 35 = 80