Aww do you wish you had more balloons?
You know, you have four balloons there. If you multiply that by ten you’d have 40.
Because to multiply anything by ten, you just move the number one place to the left and put a zero in the gap.
Or to multiply four by 100, you move the four two places to the left, add the zeros to the ones and tens columns, and that’d give you 400.
Of course, division is just the opposite. To divide by ten we take away a zero.
And to divide 400 by 100 move all digits two places to the right.
You know what’s interesting, though? If you multiply any number by one, it stays the same.
And if you multiply any number by zero, you get zero.
Useful, right?
Description
When you multiply by 10, each digit in a number moves one place value column to the left. When you multiply by 100, each digit in a number moves two place value columns to the left.
Now playing video 2 of 6
- 1 of 6
