Question

Tính:

Answer 1

a) 14 + 3 = 17                            

18 – 2 = 16                          

40 + 50 = 90

76 + 1 = 77                            

65 – 1 = 64                          

70 – 40 = 30

Answer 2

b) 30 + 20 + 10 = 60                                      

17 – 7 + 5 = 15

80 – 30 – 20 = 30                                       

12 + 6 – 8 = 10