Use place value to add

Use knowledge of place value to add quickly.

Create my FREE account

including a 7 day free trial of everything

Email Address

Password

I agree to the Terms and Conditions and Privacy Policy

Already have an account? Sign in

You may have seen tables' grids: these are addition grids and work in just the same way, adding rather than multiplying.

Adding three numbers: stop watches at the ready to see how quickly these can be completed correctly.

Today we are going to look at a quick way that you can add 99 to a 3-digit number.

Adding 99 by adding 100 and subtracting 1.

The latest news, articles, and resources, sent to your inbox weekly.

URBrainy named one of the World’s Top EdTech Companies by TIME Magazine.