Solve measures problems using knowledge of multiplying decimal fractions
Lesson details
Learning outcome
I can use knowledge of multiplying decimal fractions by whole numbers to solve measures problems.
Key learning points
- Using knowledge of multiplying decimal numbers with whole numbers can help us solve measures problems.
- __ times __ ones is equal to __ ones, so __ times __ tenths/hundredths is equal to __ tenths/hundredths.’ supports us.
- Unitising of known facts can be used to support calculating with decimal fractions.
- When we multiply by ten, the digits move one place value place to the left.
Keywords
Convert - When we convert, we change a value or expression from one form to another.
Common misconception
Children may get confused when converting between units of measure and be unsure when they need to multiply or divide.
___ are smaller than ___, so there must be more of them in the same measure so we need to multiply (and vice versa).
Teacher tip
Ensure that children are fluent with their times-tables or have access to scaffolds to avoid overload. Make this practical where possible to support children with their unitising. Also ensure children are secure with knowing that their number conversion facts e.g. 1 cm = 10 mm, 1 km = 1,000 m etc
Licence
except where otherwise stated. See Oak's terms & conditions (Collection 2).Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Match the equivalent units of measure.
1 m
10 mm
1,000 m
1,000 ml
1,000 g
Q2.Match the equation to the missing factor.
6
5
8
7
9
Q3.If 6 × 9 = 54, what does 6 × 0.9 equal?
Q4.Which of the following are multiples of eight?
Q5.Match the equation to its answer.
3.6
2.4
1.6
0
0.9
Q6.An Oak tree is 0.04 km tall. A pine tree is twice this height. How tall is the pine tree? km
Assessment exit quiz
6 Questions
Q1.If 1 cm = 10 mm and 0.1 cm = 1 mm. Convert 0.6 cm to mm. 0.6 cm = mm
Q2.Match the equation to the correct answer
450 p
160 p
480 p
90 p
720 p
800 p
Q3.Sofia made a tower out of blocks that are 0.6 cm tall. What could the height of the tower be?
Q4.If Sofia builds the tower out of three blocks that are each 0.6 cm tall. How tall is the tower in mm? mm
Q5.Lucas saves £0.40 a week. How much does he save in six weeks? Give your answer in pence. p
Q6.Lucas has £0.20 Sofia has six times as much. How much more money does Sofia have than Lucas? Give your answer in pence. pence
To help you plan your 5 maths lesson on: Solve measures problems using knowledge of multiplying decimal fractions, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 5 maths lesson on: Solve measures problems using knowledge of multiplying decimal fractions, 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 Calculating with decimal fractions unit, dive into the full primary maths curriculum, or learn more about lesson planning.