Kindly help with 5d and 5f. The answer to d is 3sf and for f the ans is 4sf. I

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Secondary 1 Maths Singapore

Kindly help with 5d and 5f. The answer to d is 3sf and for f the ans is 4sf. I am confused on the respective answers and would appreciate if you would explain it clearly to me. Thank you

Date Posted: 4 years ago

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To round off in the 10s,
It is 290 tens.
Hence it is rounded off in 3 significant figures.

To round off in whole number, you round off to the "ones",
Which is 2900.
Hence it is 4 significant figures.

So when you round off in the 100s,
It is 29 hundred.
Which is 2 significant figures.

Does this help?

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