Solve problems involving addition and subtraction of mixed numbers
I can solve problems involving the addition and subtraction of mixed numbers.
Solve problems involving addition and subtraction of mixed numbers
I can solve problems involving the addition and subtraction of mixed numbers.
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Lesson details
Key learning points
- Improper fractions can be added and subtracted in the same way as proper fractions.
- When interpreting data or solving problems, number-sense is needed to determine the most efficient strategy to use.
- Decide on the most efficient strategy by looking at the fractions of the minuend and subtrahend.
- Bar models are a useful tool to represent word problems and support in forming an equation to solve.
Keywords
Mixed number - A mixed number is a whole number and a fraction combined.
Improper fraction - An improper fraction is a fraction where the numerator is greater than or equal to the denominator.
Common misconception
Children may not always choose an efficient strategy when adding or subtracting mixed numbers. This may result in calculation errors being made.
Look at the numbers in the calculation. What do you notice? Which strategy would be most efficient to use with these numbers? Check your answer using a different strategy. If you get the same answer, you are likely to be correct.
To help you plan your year 4 maths lesson on: Solve problems involving addition and subtraction of mixed numbers, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 4 maths lesson on: Solve problems involving addition and subtraction of mixed 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.
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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 Efficient strategies for adding and subtracting mixed numbers (crossing a whole) unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Lesson video
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Starter quiz
6 Questions
$$1{{4} \over {5}}$$ -
$$ {9} \over {5}$$
$$4{{4} \over {5}}$$ -
$$ {24} \over {5}$$
$$2{{4} \over {5}}$$ -
$$ {14} \over {5}$$
$$5{{1} \over {5}}$$ -
$$ {26} \over {5}$$
$$3{{3} \over {5}}$$ -
$$ {18} \over {5}$$
Exit quiz
6 Questions
