Multiply tenths by whole numbers
Lesson details
Learning outcome
I can use known multiplication facts and unitising to multiply tenths by whole numbers.
Key learning points
- There are 10 tenths in one whole.
- Unitising can help to multiply tenths by whole numbers.
- Multiplication of tenths can be represented as repeated addition of tenths.
- ‘___ times ___ ones is equal to ___ ones so ___ times ___ tenths is equal to ___ tenths’ supports us to multiply tenths.
Keywords
Tenth - One-tenth is one part in ten equal parts.
Common misconception
Children may incorrectly write the amount of tenths e.g. 49 tenths may be written as 0.49
There are ten tenths in one whole. So e.g. 49 tenths is composed of 4 ones and 9 more tenths. We write this as 4.9
Teacher tip
Children need lots of practice at counting forwards and backwards in tenths using fraction and decimal vocabulary. Provide children who are unsure of their times tables with scaffolded support to avoid overload. Discuss with children when to use place holders for the precision. e.g. 2.0 or 2?
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Continue this sequence:
8 ones, 9 ones, 10 ones, ___ ones
Q2.Match the equations to their sum.
9
10
8
16
18
Q3.Match the factors to their product.
36
24
32
0
4
Q4.0.5 cm = mm
Q5.Match the equation to the missing factor.
7
3
6
9
8
Q6.Which of these are multiples of six?
Assessment exit quiz
6 Questions
Q1.What comes next in this sequence? 0.8, 0.9, 1.0, ?
Q2.How many tenths is 0.5 composed of?
Q3.If 7 × 8 = 56, what does 7 × 0.8 equal?
Q4.Match the equation to its answer.
3.6
2.5
2.1
0.1
0
Q5.Lucas is making a line of marbles. Each marble is 0.8 cm long. How long could it be?
Q6.Sofia has a blue ribbon that is six metres long. She also has a red ribbon that is two-tenths times the length of the blue ribbon. How long is the red ribbon? m
To help you plan your 5 maths lesson on: Multiply tenths by whole numbers, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 5 maths lesson on: Multiply tenths by whole numbers, 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.
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