The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide.

The sign means less than. is less than because of the number in the tens place. has a lesser value than , so is less than .

We have triangles and we want to subtract triangles, which means the same thing as take them away. We can cross off the triangles that we are subtracting, and count the number that we have left. In this case we have triangles left. Subtraction is like counting backwards. We can start at and count back .

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide.

is greater than because comes after when we are counting, which means it is greater.

The sign means less than. is less than because of the number in the ones place. is less than , which makes less than .

If we count all the squares together we have squares.

To add we count up. Start at and count up .

If we count all the squares together we have squares.

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide.