Subtracting numbers in standard form
I can appreciate the mathematical structures that underpin subtraction of numbers represented in standard form.
Subtracting numbers in standard form
I can appreciate the mathematical structures that underpin subtraction of numbers represented in standard form.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- When subtracting numbers represented in standard form, place value is an important consideration.
- If the power of 10 is the same for both numbers, it is easy to subtract.
- Standard form calculations can be done using a calculator.
Keywords
Standard form - Standard form - Standard form is when a number is written in the form A × 10^n, (where 1 ≤ A < 10 and n is an integer).
Common misconception
When subtracting numbers in standard form, pupils can also add the exponents of 10.
The use of the place value chart shows how the magnitude does not change to the sum of the powers of 10. The place value chart can support pupils to make the correct addition or subtraction of large or small numbers.
To help you plan your year 10 maths lesson on: Subtracting numbers in standard form, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 10 maths lesson on: Subtracting numbers in standard form, 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 4 maths lessons from the Standard form calculations unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Starter quiz
6 Questions
$$7.5\times10^{-4}$$ -
0.00075
$$5.7\times10^{4}$$ -
57000
$$5.5\times10^{4}$$ -
55000
$$5.7\times10^{8}$$ -
570000000
$$7\times10^{4}$$ -
70000
$$-9\times10^2$$ -
is negative
$$9\times10^2$$ -
is positive and less than 1000
$$9\times10^{-2}$$ -
is less than 1
$$2\times10^{9}$$ -
is even and greater than 1000