Răspuns :
ex:40
a)9+3=12
b)9:3=3
a)9-3=6
b)9x3=27
ex:41
a) 9:3=3
9-3=6
9:3+3=6
9x3=27
9+3=12
9x3+3=30
b)3:3=1
3-3=0
3:3+3=4
3x3=9
3+3=6
3x3+3=12
c) 6:3=2
6-3=3
6:3+3=5
6x3=18
6=3=9
6x3+3=21
a)9+3=12
b)9:3=3
a)9-3=6
b)9x3=27
ex:41
a) 9:3=3
9-3=6
9:3+3=6
9x3=27
9+3=12
9x3+3=30
b)3:3=1
3-3=0
3:3+3=4
3x3=9
3+3=6
3x3+3=12
c) 6:3=2
6-3=3
6:3+3=5
6x3=18
6=3=9
6x3+3=21