ajutoooooor va roog frumooos la ex 3 4.va roooog

Ajutoooooor Va Roog Frumooos La Ex 3 4va Roooog class=

Răspuns :

a) 50,2,73,83
b)20,84,27,40
c)18,0,39,76
3.
a)
42+72:9=42+8=50
50-6×8=50-48=2
73+9÷0=73+0=73
84-9:9=84-1=83
b)
10+25:5×2=10+5×2=10+10=20
90-9×4:6=90-36:6=90-6=84
18+0×9+9=18+0+9=18+9=27
72-24:6×8=72-4×8=72-32=40
c)
45:5+27:3=9+9=18
63:9-56:8=7-7=0
6×8+63:7=48+9=57
6×9+6×7=54+42=96
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