Posts tagged as "subtraction"

Posted by Peter on 18th April 2011

Year 4 quite hard mental subtraction

Many children are unaware that there are often several ways of working out a calculation and that those who choose the best methods find maths easier and are able to answer questions more quickly and more accurately. Let’s look at ‘Subtract 38 from 63. This should be done, ‘in your head’ and will involve several [...]

Posted by Peter on 15th April 2011

Written subtraction of 3-digits (2)

Written subtraction is one of those areas of maths that children frequently get wrong, mainly because they do not fully understand the method. This page looks at 3-digit subtraction and all the questions need  ‘decomposition’ in order to get them correct. The last three questions should be laid out in the same way as the [...]

Posted by Peter on 18th February 2011

Year 1 maths worksheet: early subtraction

It is sometimes difficult to find subtraction worksheets that are basic enough for very young children. This page looks at subtracting one or two from 1-digit numbers. There is no number line to help, so it is very much a mental arithmetic exercise. Most children will approach it by counting back one or two, possibly [...]

Posted by Peter on 30th September 2010

Year 4 maths worksheet: More addition and subtraction

Here is a second page of questions on adding and subtracting multiples of 10, which year 4 children should be able to take on and answer rapidly. It is always fascinating to ask children how they work things out in their heads. Let’s look at 330 + 90.  I would do this by adding 100 [...]

Posted by Peter on 9th September 2010

Year 4 worksheet: Rapid addition and subtraction

Sometimes it’s useful to have a page that tests how quickly children can respond to a set of questions – and here is one. This Year 4 maths worksheet looks at addition and subtraction of whole tens. There are 30 questions and children who have a good grasp of adding single digits should be able [...]

Posted by Peter on 19th May 2010

Resource of the week: Subtraction crossing thousands

Today we revisit a page that shows maths can be much easier than it at first appears. There are many occasions when a 4-digit subtraction can be done ‘in your head’. These questions, suitable for Year 5, are examples of this. They all involve numbers which are just over and just under a whole thousand. [...]

Posted by Peter on 3rd March 2010

Resource of the Week: Year 4 Find a difference

Sometimes a simple question can reveal a great deal about how children deal with numbers. This maths worksheet on finding differences is full of such questions. Let’s look at 3005 – 8 which is easier to do mentally than on paper. There are several ways that this can be done. 1. Count down, one at [...]

Posted by Peter on 24th February 2010

Subtract a single digit from a multiple of 100

A nice little revision exercise to check that children are confident with counting across the hundreds boundary and also have quick mental arithmetic strategies. These questions are all subtracting a single digit from a multiple of 100. Some children will do them by counting back, others will employ different strategies such as subtracting 10 and [...]

Posted by Peter on 15th September 2009

Maths Worksheet: Use the Subtraction Sign (Year 1)

This worksheet can be used as a check to see how well your child has learned their subtraction facts. There are several ways that this page could be tackled, depending on the confidence and knowledge of the child. Some children may want to use the number line to count back, others might prefer to use [...]

Posted by Peter on 14th September 2009

Written subtraction with zeros

One of the hardest ideas to get across to children is when they are carrying out a subtraction which requires adjusting across two columns. This only happens when there is a zero involved. For example: 703 286 – 3 – 6 does not give a positive answer so an adjustment to the top number needs [...]