Tag: addition

Rarely, if ever, will you find a SATs addition question which has been laid out already in the traditional, or standard method. This Year 5 maths worksheet on written addition is the second in a series which shows children clearly how addition should be laid out and also gives them the opportunity to re-write questions from a horizontal lay out to a vertical layout. The hardest part of this is to ensure the numbers line up under each other, starting with the units on the far right. Squares can help with this in the early stages, but children should also get used to laying them out correctly without squared paper.

This pager can be found in our Year 5 Calculating section. Similar pages, with more detailed instructions, can also be found in our Four Rules section.

Written addition of several numbers (2)

One of the things which children find quite hard to do is to set out a question in the best format. In the Key Stage 2 tests addition problems are rarely, if ever, set out in the standard form that children learn.

This page tries to help with the addition of two 3-digit numbers. The first 10 questions are set out in the standard way, but the next ten are written across the page. When faced with questions like this it is important to re-write the sum to have the best chance of success. Of course, it is important to keep the numbers in line (units under units, tens under tens etc) and squares have been provided to help with this.

A very useful page for those who are still uncertain about how to approach these questions.

Written addition of several numbers (2)

By the end of year 5 children should be confident with written methods of addition. This worksheet is a stage in this process. Some of the questions are set out how they should be. The later questions need to be set out in the same way. It is important to make sure that units are lined up with units, tens with tens etc and squared paper can be a help with this.

Remind children that when adding three digits that they can be added in any order: look for pairs that make 10 or other combinations that they recognise instantly.

This page can be found in the year 5 Calculations section. Similar resources can also be found in the Four Rules section.

Addition of several numbers (1)

This is a year 6 revision sheet to help children who are still not confident with adding. The method implies a good understanding of place value. At one time it was fashionable for schools to use square paper to carry out written sums but this has tended not to be the case in recent years, making it harder for children to line the numbers up correctly.

When using the standard written method of addition it is important to  lay the sum out correctly, keeping the columns neatly in line. The method is to add the units first, put the units in the answer and ‘carry’ any tens into the tens column, underneath the answer. Then add the tens in the same way, remembering to include any ten which has been carried forward from the units. finally add the hundreds in the same way.

How to add two 3-digit numbers

Here is a snappy little worksheet to check that children can add on from 2-digit numbers to make 50. There are several different mental strategies that can be used, but the most efficient is usually to count on to the next whole ten and then count on in tens to 50.

Watch out for a common error whereby children add on to make 10 and then add on again from the original tens number; this will give them a total 10 more than is correct.

Revise adding to 50

Whilst the Primary Framework for Mathematics has little to say about addition of whole numbers in Year 6 it is still worth revising skills and developing fast technique, especially with mental arithmetic.

Here we have a consolidation page of adding three 2-digit numbers, using all the techniques developed so far.If children find this difficult it could be that they are unsure of their basic number bonds, in other words how quickly can they add two single digit numbers. This should be almost instantaneous, if not it might be worth practising over the summer holiday!!

Practice adding three 2-digit numbers

Here we have a number of simple tips and practice at adding three 2-digit numbers mentally.

By Year 6 children should have a wide range of techniques at their fingertips for adding mentally.

Some of the tips on this page include:

starting with the largest digit

adding the tens before the units

looking for pairs that make 10

add the nearest whole ten and adjust (eg add 39 by adding 40 and subtracting 1)
How to add three 2-digit numbers