Addition for Year 6 (age 10-11)

Revision of adding several small numbers mentally, using strategies learned earlier.

Adding two 3-digit numbers mentally. Often it is best to start with the hundreds, then the tens and finally the units; this is the opposite order than when using written methods.

Further practice with mental addition using a variety of strategies to answer them quickly and correctly.

Without any written working out, answer these addition and subtraction of multiples of 100.

Quick practice adding a number to make a total of 100,000.

Completing addition sentences using mental methods.

Tricky sums, these. Think about the digits in the tenths and hundredths columns when working out these addition of decimals questions.

Mental addition skills with numbers up to 3 decimal places.

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

Work out mentally the answers to these sets of addition sums. For some, write down the method used to do it.

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.

When adding using decimals it is very important that the decimal points should line up under each other. If the sum also involves whole numbers it is a good idea to put a decimal point after the whole number followed by a zero.

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