Myths about teaching can hold you back
- Year 7
Multiplying with decimals
I can generalise and fluently use written multiplication strategies to calculate accurately with decimals.
- Year 7
Multiplying with decimals
I can generalise and fluently use written multiplication strategies to calculate accurately with decimals.
Lesson details
Key learning points
- The factorising multiples of 10 strategy can be used.
- With multiplication it is important to consider the magnitude of the product.
- Similar calculations can be used to help reason about a product.
Keywords
Factorising - Factorising means to express a term as the product of its factors.
Common misconception
When pupils multiply decimals, they use the column method and align the decimal points.
If the column method is used, encourage integer multiplication and use of powers of 10 to adjust the answer to the original calculation.
To help you plan your year 7 maths lesson on: Multiplying with decimals, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 7 maths lesson on: Multiplying with decimals, 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 3 maths lessons from the Arithmetic procedures with integers and decimals unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Prior knowledge starter quiz
6 Questions
Q1.A is a term which exactly divides another term.
Q2.Match the multiplication of these integers with their answers
$$6\times4$$ -
24
$$6\times5$$ -
30
$$9\times2$$ -
18
$$8\times4$$ -
32
Q3.Complete the calculation: $$6\times$$ $$= 600$$
Q4.Divide 1 into 10 equal parts. What does each part represent as a decimal?
Q5.Divide 1 into 100 equal parts. What does each part represent as a decimal?
Q6.Without using a calculator, work out: $$2.4+1.28+0.3+0.13=$$
Assessment exit quiz
6 Questions
Q1.A __________ is the result of two or more numbers multiplied together.
Q2.Which of these is equivalent to 6.34?
Q3.Dividing by 1000 is equivalent to __________
Q4.Which of these is equivalent to $$4.56\times2.3$$?
Q5.Work out: $$5.8\times2.9=$$
Q6.Using your knowledge on identifying a reasonable answer and without working out, match the calculation to the correct answer.
$$2.4\times8.4$$ -
20.16
$$2.9\times2.5$$ -
7.25
$$11.3\times3.1$$ -
35.03
$$5.7\times0.2$$ -
1.14