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Maths Resources & WorksheetsYear 5 Maths LessonsAutumn Block 2 (Addition and Subtraction)02 Subtract More Than 4-Digits › Subtract More Than 4-Digits Year 5 Addition and Subtraction Learning Video Clip

# Subtract More Than 4-Digits Year 5 Addition and Subtraction Learning Video Clip ## Step 2: Subtract More Than 4-Digits Year 5 Addition and Subtraction Learning Video Clip

Tripp and Tori Backpacker are at an auction in India. They are buying objects. They need to correctly subtract the money they have spent.

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1. How far does the piece of luggage drop?
Discuss the calculation required. Why is subtraction needed?
38,526 feet – 29,030 feet = 9,496 feet

2. How much more does Tori bid than Tripp?
Discuss the term ‘more than’ and the possible misconception of adding the two numbers.
28,268 rupees

3. How much change does he get?
Discuss methods of subtraction.
4,498 rupees

4. What would be the most efficient way to subtract from 50,000?
Discuss possible methods – finding the difference by subtracting 1 from both numbers, exchanging across columns etc.
The most efficient way to subtract from 50,000 would be by finding the difference. For example, 50,000 – 45,502 = 49,999 – 45,501 = 4,498.

5. What mistake could the seller have made in his calculation?
Discuss possible errors that could have been made – lining up columns incorrectly, not exchanging when using place holder etc.
It is most likely that the seller did not exchange when he subtracted from 50,000.

6. Which combinations of objects could she buy?
Discuss methods suitable to find the combinations – subtract and subtract again etc. Discuss whether any objects can be discounted. This question is open-ended for the children to explore.
Various answers, for example: Saree, vase and bowl.

Optional discussion points:
What other objects might you find at an Indian auction? Given the cost of the other items, how much do you think they would cost? Which combinations could you create now?

National Curriculum Objectives

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