Scale known multiplication facts by 10
Lesson details
Learning outcome
I can use unitising and multiplying by 10 to scale multiplication facts.
Key learning points
- If two groups of 4 are equal to 8 then two group of 4 tens is equal to 8 tens or 80
- By thinking of a number of 10s, you can scale up and work out the 20, 40 and 80 times tables
- By thinking of a number of 10s, you can scale up and work out ten times the 2, 4 and 8 times tables
Keywords
Scale / scaling - Scaling is when a given quantity is made ___ times the size. In this lesson, scaling will involve making values 10 times the size.
Common misconception
Lack of fluency in multiplication facts and / or understanding of word problems. 'Adding a 0' at the end.
Use language of unitisation to support pupils mathematical thinking. Clear modelling of steps in how to find the operation for the calculation. Use gattegno chart or place value chart to highlight scaling by 10.
Teacher tip
At this stage children should have secure knowledge of their 2s, 4s and 8 times tables. Choral chanting should be given at any opportunity.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What is the missing number in this sequence: 0, 10, 20, 30, 40, 50, 60, , 80, 90, 100
Q2.Fill in the gap. 2 × = 8
Q3.Match the multiplication fact to the correct product.
24
40
28
48
Q4.Which numbers are multiples of 10?
Q5.Match the number to the correct product when the number has been multiplied by 10
80
40
20
120
Q6.Andeep has collected 5 packets of 4 guinea cards. Izzy has collected twice as many as Andeep.
How many guinea cards does Izzy have?
Assessment exit quiz
6 Questions
Q1.Select the numbers which are multiples of 2 and 4 and 8
Q2.8 × 12 can help you to solve which other multiplication equation?
Q3.Match the expressions on the left which can help you to solve the expressions on the right.
8 × 110
70 × 4
20 × 2
6 × 80
Q4.If 4 × 7 = 28 then 40 × 7 =
Q5.Complete: If 9 × 8 = 72 then 90 × 8 =
Q6.Andeep has collected 7 packets of 8 guinea cards. Izzy has collected 10 times as many as Andeep.
How many guinea cards does Izzy have?
To help you plan your 3 maths lesson on: Scale known multiplication facts by 10, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 3 maths lesson on: Scale known multiplication facts by 10, 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.