WALT add using different methods

Mathematics can be a complicated subject but that does not mean that learning it has to be difficult or boring. For this reason, at O Castro British School we provide the necessary tools in mathematics to inspire and encourage students, and for them to acquire the most complex concepts in a lively and fun way.

Problem solving is an important aspect of our Mathematics curriculum, and our Year 3 pupils have been using their digit cards to show the answer to mental Maths questions. It is an efficient method of getting answers from all the children at once without using hands up. Every child can participate simultaneously and we can immediately see who needs help to get the correct answer.

Music can also be a very effective resource in this process. With this song Year 3 pupils have been performing sums of two numbers that result in ten, to mentally add up larger numbers including multiples of 100.
Eg 6+4=10
So 60+40=100
And 600+400=1000
One child even used her hair clip to hold the cards together and make ten! Very creative!


Calculations are a challenge for them! We begin by teaching the children to partition into hundreds, tens and units. They can then work horizontally and add the units, add the tens, add the hundreds and then find the grand total. We also work horizontally on a number line, jumping in tens and in units to find the total. The children must be secure in these methods before moving on to working vertically in columns.

Even when we begin column addition, we begin any adding two digit numbers that do not sum more than ten units. Later we introduce adding numbers where the total is more than 10 units and so we move to the expanded column method.
Children have very different learning styles and some prefer a number line, others prefer a more traditional column method. We encourage the children to try the different methods and find the one that suits them best. All the methods here at O Castro British School rely on a secure base in mental Maths hence why we continually work with whiteboards, 100 squares and digit cards to provide the speed and accuracy needed to complete the written mathematical methods.
As you can see, the children are very creative and demonstrate their understanding of addition in a variety of ways.

Problem solving helps children to use the knowledge they have gained in the school environment in everyday situations that they may face in their day-to-day lives. In this way children reinforce and consolidate these concepts and when they become useful and have a purpose – then true learning has taken place.” Sarah Hill, KS2 teacher.

21 / 10 / 20