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