In the third line we are multiplying by \(300\) (three hundreds). As we are multiplying by hundreds both the tens and unit digit will always be zero. In a similar procedure to above: \(3 \times 7 ...

There are 3 rows of 8 cookies ... This is when you could use short multiplication to help you. Whichever numbers you chose to multiply first, you will always have a large 2-digit number multiplied ...