1)7•3=21 2)15:3=5 18:3=6 21:3=7 24:3=8 27:3=9 12:3=4
4•3=12
4•3=129•3=27
4•3=129•3=275•3=15
4•3=129•3=275•3=158•3=24
4•3=129•3=275•3=158•3=246•3=18
1)7•3=21 2)15:3=5 18:3=6 21:3=7 24:3=8 27:3=9 12:3=4
4•3=12
4•3=129•3=27
4•3=129•3=275•3=15
4•3=129•3=275•3=158•3=24
4•3=129•3=275•3=158•3=246•3=18