A 0-99 number square can help with adding these pairs of 2-digit numbers mentally. Remember to click in the answer box before starting.
A quick run through of the most common terms used for addition questions.
It's a good idea to check the units total first when trying to answer these questions.
You choose both the numbers that make the total shown, so you can make it as easy or as hard as you like.
How much do the ice creams and milkshakes cost? Good practice at adding 3 numbers.
Work out the missing number that will make the total 100. A 1-100 number square is there to help you, if needed.
Adding two 2-digit numbers as fast as you can in just one minute! No number square to help!