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Question

Estimate the following using general rule: 796 – 314
[2 marks]

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Solution

We can round off each term to its nearest hundred to make our calculation easy.

796 can be rounded off to 800.
[0.5 marks]
314 can be rounded off to 300.
[0.5 marks]
Hence, the estimated difference = 800 - 300 = 500.
[1 marks]


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