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Descompune numerele 54,68,55,89,53,97

Răspuns :

54=50+4
68=60+8
55=50+5
89=80+9
53=50+3
97=90+7
54= 50+4     68=  60+8                                                                                                                55=  50+5     89=  80+9                                                                                                                53=50+3                                                                                                                97= 90+7