Turn your child into a maths magician?

Doubling And Halving: A Strategy To Help Your Children
Sometimes, our children look at a maths problem and refuse to go any further- why? Because it looks too hard! This is frustrating so how can we, as parents, help them? By using strategies to make things easier!
In maths there are two sections, knowledge and strategies.

Knowledge describes the main things the children need to know about numbers and can remember quickly (so they know it really well, like their timetables- which they should know so well they can answer within 3 seconds- they don’t? -sign up to www.stayontrack.co.nz to help your children know their basic facts).

Strategies (in Maths) are the tools and processes which you and your child can use to help solve problems that can otherwise seem very difficult. They are a clever way to make a hard problem easier to solve.

In school, children are taught different strategies to help make problem solving simpler and easier to understand.

One strategy for solving big multiplication problems is:

‘Doubling and Halving’.

Doubling and halving can be used to make multiplication problems easier to solve. For example, 3 x 16 is the same as 6 x 8. Isn’t that so much easier? Check it out- you will find it is the same answer!

The rule is that if you halve one side you must double the other.

For Example:

  • 3 x 20 is the same as 6 x 10
  • 5 x 16 is the same as 10 x 8
  • 18 x 50 is the same as 9 x 100 and so on.

    The idea for this strategy is that you can break down larger multiplication problems to something your child can recognise and feel more confident with. It also helps them to understand the relationships between numbers.

    There is some knowledge that your child needs to know to be able to uses these strategy really well; their timetables (multiplication facts), how to double numbers to 100, and how to halve numbers to 100. StayOntrack has many activities that teach doubling and halving, plus the timetables. Sign up at www,stayontrack.co.nz

    It’s ok to play around with numbers, to make mistakes and find new ways-strategies help us take the hard stuff and break it down! - that is how we truly learn!
  • StayOnTrack Limited 2014