Block 2: Addition and Subtraction

Completing addition sentences using mental methods.

These are about as hard as you will get for mental arithmetic. Many children (and adults) will find them very tricky!

Using the standard written method to add thousands. All questions should be answered in this way. Take particular care that the units are lined up when adding these totals together.

Addition of numbers in the millions.

Missing digits within standard method of addition.

Addition of very large numbers up to millions.

Use the written method of addition to answer these word problems.

Add two 5-digit multiples of 1,000 together. How many can you answer in a minute?

Written subtraction of very large numbers up to millions.

Written method of subtraction using very large numbers.

Complete the subtractions.

Subtraction word problems with very large numbers.

Subtract two 7-digit multiples of 100,000.