Mixed addition (1)

Mental addition questions which get quite tricky.

Create my FREE account

including a 7 day free trial of everything

Email Address

Password

Newsletter

The URBrainy email newsletter (sent every 2 weeks) provides resource updates and helpful guides for teaching and learning.

Yes, I would like to receive the URBrainy newsletter.

I agree to the Terms and Conditions and Privacy Policy

Already have an account? Sign in

A good revision exercise on mentally adding and subtracting multiples of 10.

Mental addition and subtraction of multiples of 100, including crossing over the thousands.

Working carefully, looking for patterns to help, remembering that addition can be done in any order.

Bar models can be a great help when adding mentally. Children may also want to make jottings when doing these.