Solve multiplication problems using doubling and halving Cover

Solve multiplication problems using doubling and halving

Can your students judge which number to double and which number to halve when using this strategy to solve multiplication problems? Two tasks in this unit requires students to rewrite a sum using doubling and halving to make it easier to solve. For example, if the given sum is 18 x 5, students need to understand that 9 x 10 will give them the same answer. Other tasks require students to match up sums with their equivalent 'easier' sum, as well as using this strategy to solve word problems.

Topics: Maths strategy
Years: 5-6 | Pages: 3 | Code: E0244-09

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Jackie Andrews

Jackie Andrews is one of Essential Resources’ most successful authors, with many thousands of her books sold around the world. Her success is backed by her extensive teaching experience in both New Zealand and the United Kingdom. That experience, combined with her assiduous approach to professional development and passion for supporting teachers, drives her to create resources that improve student outcomes and inform best teaching practice. Jackie currently has 75 titles in print, a number of which have been translated into other languages. Her wider range of mathematics and English publications reflect the diversity of her expertise throughout primary school, as well as her ability to respond to the specific needs of particular age groups and ability levels. Supporting teachers in their curriculum planning is another specialty area. Jackie’s Curriculum Planning Made Easy series has been immensely popular with teachers looking for practical and effective ways of planning classroom programmes. It also led to the creation of iUgo – a digital solution that is reshaping the landscape of classroom planning and resource management. Jackie has been a key player in developing the usability of iUgo and in training teachers to get the most out from it. Complementing her work in the publication sector Jackie continues to enjoy her time in the classroom. Many schools and teachers also seek out her advice on effective resourcing and teaching practice.

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Jude Callaghan is an experienced, enthusiastic teacher with a passion for teaching and learning, and delivers teaching programmes that are innovative and exciting. Jude has embraced the Numeracy Development Programme wholeheartedly, and has joined the No Nonsense Number writing team to share her deep understanding and wealth of ideas.

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