Anna

                                

                                                                                       Adunarea si scaderea numerelor formate din zeci si unitati

  1. Calculati:

 

  1. 46 + 21 =                                       b)25 + 23 =                                 c)98 – 38 =                           

35 + 42 =                                          36 + 36 =                                     65 – 21 =

64 + 13 =                                          22 + 66 =                                     87 – 36 =

27 + 31 =                                          54 + 45 =                                     49 – 27 =

 

      d)     98 – 56 =

               69 – 37 =

               94 – 63 =

               86 – 66 =

  1. Completați tabelul :

 

 

      a

64

 

 

47

65

 

56

 

64

      b

21

24

32

22

 

33

23

 

24

a + b

 

98

 

 

89

 

 

 

 

a - b

 

 

22

 

 

23

 

 

 

 

  1. Calculați:
  1.  40 + 20 + 30 =                                          b) 72 + 25 – 83 =                                        c) 94 – 23 + 14 =

 

  1. Aflați termenul necunoscut:

                      a + 24 = 84                                         b – 16 = 20                                      95 – c = 21