Question

Tính:  

a) 2 x 4                        5 x 9                            b) 15 : 5                       12 : 2

    5 x 7                        2 x 10                              18 : 2                       20 : 5

    5 x 6                        2 x 7                                35 : 5                       14 : 2

    2 x 9                        5 x 8                                45 : 5                       20 : 2

Answer 1

a) 2 x 4 = 8                              5 x 9 = 45                               

    5 x 7 = 35                            2 x 10 = 10                                 

    5 x 6 = 30                            2 x 7 = 14                                    

    2 x 9 = 18                            5 x 8 = 40

b) 15 : 5 = 3                            12 : 2 = 6        

    18 : 2 = 9                             20 : 5 = 4        

    35 : 5 = 7                             14 : 2 = 7

    45 : 5 = 9                             20 : 2 = 10