Multiply 315 and 10 together
Multiply 7 and 3 together and put given number of zeroes after it
Recall the times table of 20
How many zeros you need to put in front of the product if you are multiplying by 100.
Remember to start with ones column.
Think about the digit that should come at units place in the answer.
Commutative means we can make the operation in any order.
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