- Year 6
Use equivalence and compensation strategies to solve subtraction problems in a range of contexts
I can use equivalence and compensation strategies to solve subtraction problems in a range of contexts.
- Year 6
Use equivalence and compensation strategies to solve subtraction problems in a range of contexts
I can use equivalence and compensation strategies to solve subtraction problems in a range of contexts.
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Lesson details
Key learning points
- Compensation can be used to solve subtraction calculations.
- Equivalence can be used to solve subtraction calculations.
- Look at the numbers and decide on the most efficient strategy to use.
Keywords
Difference - The difference is the result after subtracting one number from another.
Adjust - When you adjust you make a change to a number. This is done to make a calculation easier to solve mentally.
Common misconception
Lots of children have an understanding of goal difference from experiences outside the classroom but this might be the first time some children have encountered it and it may cause confusion.
Consider pre-teaching if that is a possibility or introduce it in a PE context to begin with. You could even keep score of any playtime games for the days leading up to the lesson to give some real life context.
To help you plan your year 6 maths lesson on: Use equivalence and compensation strategies to solve subtraction problems in a range of contexts, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 6 maths lesson on: Use equivalence and compensation strategies to solve subtraction problems in a range of contexts, 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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Explore more key stage 2 maths lessons from the Use equivalence and compensation to simplify and solve subtraction problems unit, dive into the full primary maths curriculum, or learn more about lesson planning.
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Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.In the bar model shown, which team has scored the most goals?
Q2.Select the phrase to complete the definition of constant difference. If the minuend and subtrahend are adjusted by the same amount, the difference ...
Q3.Which pair of expressions have the same difference?
Q4.Solve the following calculation mentally by adjusting the minuend and then the difference.
10,007 − 244 =
Q5.Solve the following calculation by adjusting both subtrahend and minuend to create an easier subtraction.
= 752 − 347
Q6.Look at the pair of equations below and use the complete one to help find the missing number in the second.
Assessment exit quiz
6 Questions
Q1.Sticky sticks have a goal difference of 17 before they play two matches. They win both their matches 2:0 and 3:0 What is their goal difference now?
Q2.Polar Bears have a goal difference of 12 before they play two matches. They win the first match 4:2 but lose the second 1:5. What is their goal difference now?
Q3.Happy Feet have a goal difference of 19 before they play three more fixtures. They win 2:1, lose 1:4 and lose 0:3 in the matches. What is their goal difference now?
Q4.Bolly Bears have a goal difference of 16 before they play three more fixtures. They draw 2:2, win 5:2 and lose 0:2 in the matches. What is their goal difference now?
Q5.Bolly Bears have a goal difference of 17 and Polar Bears a goal difference of 12 They play one another and Polar Bears win 5:3. Who has the greatest goal difference now?
Q6.Happy Feet, Skatey Spuds and Lucky Pucky all have a goal difference of 14 They each play one another with the results shown here. Which of these shows the goal difference from greatest to smallest?
