Use knowledge of the divisibility rules for divisors 8 to solve problems
Lesson details
Learning outcome
I can solve problems using knowledge of the divisibility rules for 8
Key learning points
- If you can halve a multiple of 4 then it is a multiple of 8 and divisible by 8
- All numbers divisible by 8 are also divisible by 4 and 2
- Multiples of 8 are all multiples of both 2 and 4
Keywords
Halve - A half is one of two equal parts of a whole.
Divisible - Divisibility is when division of a number results in another whole number.
Common misconception
Lack of fluency in 4s and or 8s times tables and understanding when tackling word problems.
Clearly model highlighting key words of worded problems to understand the problem and the operation required for the calculation. Continue to use language stems such as 'If I know...' 'Then I know...,' to support mathematical thinking.
Teacher tip
By this lesson, pupils should be fluent in the 2s, 4s & 8s and the divisibility rules for both 2s and 4s. Continue to use language reflective of the relational pattern between 4s & 8s e.g. 'If I know that 4 × 6 = 24 then I know that 8 × 6 is 48; when you double one factor the product also doubles.'
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What single number fits into each of these gaps to make this correct? 16 ÷ 8 = 16 ÷ ___ ÷___ ÷___
Q2.Match the numbers so that one is half of the amount of the other.
10
15
20
35
45
Q3.Select the multiples of 4
Q4.Select the multiples of 8
Q5.A bakery has baked 50 cupcakes. It packs them into full boxes of 4
Can 49 cupcakes be packed into full boxes of 4?
Q6.A bakery has baked 170 cupcakes. It packs them into boxes of 4
Can all 170 cupcakes be packed?
Assessment exit quiz
6 Questions
Q1.Look at the number sequence: 8, 16, 24, ___, 40, 48 . What is the missing number?
Q2.Match the numbers so that one is half of the amount of the other.
100
150
200
350
450
Q3.Select the multiples of 8
Q4.Select the multiples of 4
Q5.Select the multiples of 8
Q6.Is 784 a multiple of 8?
To help you plan your 3 maths lesson on: Use knowledge of the divisibility rules for divisors 8 to solve problems, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 3 maths lesson on: Use knowledge of the divisibility rules for divisors 8 to solve problems, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 2 maths lessons from the 2, 4 and 8 times tables: using times tables to solve problems unit, dive into the full primary maths curriculum, or learn more about lesson planning.