Some of these sums have big numbers in, like 99 divided by 11.
It would be silly to draw 11 circles and share out 99 into them, so a quicker way is to think 'how many 11s are there in 99?'
You can work this out by counting up in 11s until you get to 99.
Can you spot the pattern?
__x11=99 This missing number is your answer to 99 divided by 11.