Гра. "Звірі-приклади". Цікава математика

(45 + 5) – 20 + 8          (70 – 30) + (12 + 8)                                                          

88 – 40 + 2 – 10                          (32 + 8 ) - (15 – 5 )

12 + 8 – 5 + (24 – 4)        9 + 3 ;   8 + 5;    12 - 4

       + 5 = 12                                                                      1 дм 2 см = см                                                                                                                    

18 -     = 10                                       35 см =     дм    см