Checking and securing understanding of multiples of 10
I can factorise multiples of 10^n in order to simplify multiplication and division of both integers and decimals.
Checking and securing understanding of multiples of 10
I can factorise multiples of 10^n in order to simplify multiplication and division of both integers and decimals.
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Lesson details
Key learning points
- Factorising multiples of 10 can scale the calculation to easier values.
- It is important to consider place value so answers are scaled back correctly when multiplying.
- Equivalent fractions can be used to simplify division.
Keywords
Exponential form - When a number is multiplied by itself multiple times, it can be written more simply in exponential form.
Commutative - An operation is commutative if the values it is operating on can be written in either order without changing the calculation.
Common misconception
There are many ways to multiply decimals or large numbers. With decimals, some pupils choose to multiply decimals using the column method and incorrectly use a decimal point when calculating answers.
When multiplying decimals, converting the calculation using integers and powers of 10 makes the calculation easier to work with.
To help you plan your year 9 maths lesson on: Checking and securing understanding of multiples of 10, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 9 maths lesson on: Checking and securing understanding of multiples of 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.
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The assessment exit quiz will test your pupils' understanding of the key learning points.
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Licence
Lesson video
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Starter quiz
6 Questions
$$7$$ -
$$8\times8\times8\times8\times8\times8\times8 = 8^\square$$
$$8$$ -
$$4\times4\times4\times4\times4\times4\times4\times4= 4^\square$$
$$5$$ -
$$5\times5\times5\times5\times5= 5^\square$$
$$2$$ -
$$100 = 10^\square$$
$$4$$ -
$$10000 = 10^\square$$
$$1$$ -
$$10 = 10^\square$$
$$10^4$$ -
$$10 000$$
$$10^2$$ -
$$100$$
$${1} \over {10^2}$$ -
$$0.01$$
$$10^0$$ -
$$1$$
$$10^6$$ -
$$1 000 000$$
$${1} \over {10^3}$$ -
$$0.001$$
Exit quiz
6 Questions
2 × 3 = 0.2 × 30 = 0.3 × 20 -
6
4 × 2 = 0.4 × 20 = 0.2 × 40 -
8
0.7 × 20 = 0.2 × 70 = 7 × 2 -
14
0.3 × 30 = 3 × 3 = 0.03 × 300 -
9