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Multiplication

Counting by 2s


How many cubes are there ?

There are 5 groups of 2 cubes. We can count by 2s: 2, 4, 6, 8 and 10. There are 10 cubes.


Proposition Counting by 2s

Counting by 5s


How many cubes are there ?

There are 3 groups of 5 cubes. We can count by 5s: 5, 10, 15. There are 15 cubes.


Proposition Counting by 5s

Counting by 10s


How many cubes are there?

There are 3 groups of 10 cubes. We can count by 10s: 10, 20, 30. There are 30 cubes.


Proposition Counting by 10s