Addition in Year 5 (age 9-10)
Children will enjoy showing off their high level of mental arithmetic. Quick mental methods are extended to larger numbers, including addition of two, 2-digit numbers. The standard written method should now be used efficiently, including numbers with decimals.
Revise addition skills
Revise mental addition skills.
Revision pages on adding to make multiples of 10 and subtraction of multiples of 10.
Revising adding and using the relationship between addition and subtraction.
Addition and subtraction of multiples of 100. Easy if you know the totals of pairs of single digits.
Knowing pairs of numbers that make 10 and being able to count in tens make these questions much quicker to answer.
Adding several small numbers
Using mental methods to add several small numbers.
Quick timed challenge adding three or more small numbers as quickly as possible.
Without doing any working out on paper answer these adding several numbers questions.
More practice at adding three 2-digit numbers (teen numbers only).
Mental addition of decimals
Using mental methods to add simple decimals.
Mental addition and subtraction using decimals to make a total of 1 or 10.
Mental addition with decimal fractions.
Applying knowledge to add and subtract decimals mentally.
Adding tenths and hundredths. These are just like adding tens and units, but watch out for the decimal point!
Mental addition of large numbers
Adding larger numbers 'in your head' including thousands.
Adding multiples of one hundred by counting on
Adding multiples of one thousand by counting on.
Use knowledge of known facts to add multiples of 1000 quickly and efficiently.
Adding multiples of ten thousand by counting on.
Quick practice adding multiples of 10,000 to 6-digit numbers.
Adding thousands and hundreds mentally.
Work out the addition questions in your head and just write down the answers.
Use the formal written method to add whole numbers, including numbers with over 4 digits.
Take particular care to line up the units when adding these numbers.
Adding 5-digit numbers with the aid of squared paper.
More addition of large numbers using squared paper to help.
Adding larger amounts of money using squared paper.
Adding three large numbers using pencil and paper methods.
Using the standard written method to add 5-digit numbers.
Write the missing digits to make the additions correct.
Written addition of decimals
Use the formal written method to add decimals.
When adding decimals it is very important that the decimal points line up under each other.
Using the standard written method to efficiently add decimals.
Practice pages for addition with decimals.
Tricky addition of decimals - make sure decimal points line up vertically.
A further look at adding two 3-digit numbers which are decimals.
Harder practice of written addition of decimals.
Adding numbers with different decimal places.
More practice for adding decimals.
Investigating addition and problem solving.
Mini addition investigations. I especially like the one on page 3.
How many different ways can four squares be chosen that add up to 34. There are lots of them!
Adding three amounts and finding change from £10
Fun activities, adding and ordering decimals.
A quick look at what is expected in year 5 with addition and subtraction.
A look at some of the written methods of addition that children will come across, resulting in the standard written method.