Solve problems involving adjacent multiples of nine
Lesson details
Learning outcome
I can solve problems involving adjacent multiples of nine.
Key learning points
- Adjacent multiples of nine have a difference of 9 and alternate between odd and even numbers.
- If you add 9 to a multiple of nine you get the next multiple of nine.
- If you subtract 9 from a multiple of nine you get the previous multiple of nine.
Keywords
Adjacent multiple - An adjacent multiple is a multiple next to another. It could be before or after.
Common misconception
Pupils may find it difficult to solve problems or misunderstand questions.
Model clearly how to identify key phrases and words which will identify the operation and equation required for word problems. This could involve drawing bar models or other representations.
Teacher tip
By this point fluency in 9 times tables will support children in solving these problems. Continue to chorally rehearse the 9 times tables.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Which multiple of 9 is missing from this sequence?
45, , 63, 72
Q2.What is 12 × 9 =
Q3.Which symbol goes in the gap to make this correct?
9 × 9 = 10 × 9 ___ 9
Q4.Which symbol goes in the gap to make this correct?
2 × 9 = 3 × 9 ___ 9
Q5.Complete: I know that 3 × 9 = 27 so 30 × 9 =
Q6.Complete: I know that 5 × 9 = 45 so 50 × 9 =
Assessment exit quiz
6 Questions
Q1.Lucas makes shapes using 9 sticks each time. He has made 3 shapes and used 27 sticks. Lucas makes another of the shapes. How many sticks has he used now?
Q2.There are 7 flowers with 9 petals each. If Jun gives away one flower, how many petals will there be altogether? petals
Q3.Lucas has filled 7 buckets with 9 litres of water ready for a water fight. Jun brings one more bucket of water with the same amount. How many litres of water have they used altogether? litres
Q4.If 20 × 9 = 180 then 21 × 9 =
Q5.If 80 × 9 = 720 then 81 × 9 =
Q6.If 37 × 9 = 333 then 36 × 9 =
To help you plan your 4 maths lesson on: Solve problems involving adjacent multiples of nine, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 4 maths lesson on: Solve problems involving adjacent multiples of nine, 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 Represent counting in nines as the 9 times table unit, dive into the full primary maths curriculum, or learn more about lesson planning.