Răspuns :
a)18÷2=...×3
18÷2÷3
9÷3=3
4×2=16÷...
8=16÷...
8=16÷2
b)9×...=81÷9
9×...=9
9×1=9
42÷7=36÷...
6=36÷...
6=36÷6
c)45÷...=35÷...
45÷9=35÷7
5=5
36÷4=3×...
9=3×...
9=3×3
a)18÷2=...×3
18÷2÷3
9÷3=3
4×2=16÷...
8=16÷...
8=16÷2
b)9×...=81÷9
9×...=9
9×1=9
42÷7=36÷...
6=36÷...
6=36÷6
c)45÷...=35÷...
45÷9=35÷7
5=5
36÷4=3×...
9=3×...
9=3×3