calculeaza,apoi efectueaza proba fiecarui operatie
Dau coroana si follow

Răspuns:
4x5=20=>Proba:20÷5=4
36÷4=9=>Proba:9x4=36
9×7=63=>Proba:63:7=9
56:8=7=>Proba:7×8=56
6×5=30=>Proba: 30÷5=6
45÷9=5=>Proba:5×9=45