Rounding Off Estimations — Practice Quiz
ICSE · Class 5 · Mathematics
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Quick Quiz: Rounding Off Estimations
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What is 47 rounded off to the nearest ten?
Which of the following numbers rounds off to 300 when rounded to the nearest hundred?
Rounding off 89 to the nearest ten gives:
What is 1048 rounded off to the nearest hundred?
Sample Questions
Which numbers round off to 500 when rounded to the nearest hundred? (Choose two)
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450,549
Numbers from 450 to 549 round to 500. 450 is the halfway point and rounds up, 549 is just below 550 so it rounds down to 500.
True or False: 73 rounds off to 70 to the nearest ten.
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True
73 is closer to 70 than to 80 because 73 - 70 = 3, and 80 - 73 = 7. So it rounds to 70.
Which of the following is a round number?
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100
100 is a round number because it ends with two zeros and is easy to understand and use in estimation.
True or False: Rounding off is used to get an exact answer.
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False
Rounding off gives an approximate answer, not an exact one. It is used for estimation.
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