Question

Efectueaza fiecare operatie in trei moduri diferite ,cu proba.33+45,58+34,52+25,28+37,73-21,99-19,86-34,93-45,92-70,71-69.

Answer 1

PRIMUL MOD:

33+45=78
P:45+33=78

58+34=92
P: 34+58= 92

52+25=77
P: 25+52=77

28+37=65
P: 37+28=65

73-21=52
P: 21+52=73

99-19=80
P: 19+80=99

86-34=52
P: 34+52=86

93-45=48
P: 45+48=93

92-70=22
P: 70+22=92

71-69=2
P: 69+2=71


AL DOILEA MOD:

33+45=78
P: 78-33=45

58+34=92
P: 92-58=34

52+25=77
P: 77-52= 25

28+37=65
P: 65-28=37

73-21=52
P: 73-52=21

99-19=80
P: 99-80=19

86-34=52
P: 86-52=34

93-45=48
P: 93-48=45

92-70=22
P: 92-22=70

71-69=2
P: 71-3=69


AL TREILEA MOD:

33+45=78
P: 78-45=33

58+34=92
P: 92-33=58

52+25=77
P: 77-25=52

28+37=65
P: 65-37=28

73-21=52
P: 52+21=73

99-19=80
P: 80+19

86-34=52
P: 52+34=86

93-45=48
P: 48+45=93

92-70=22
P: 22+70=92

71-69=2
P: 2+69=71




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