Round to Nearest 10 or 100 - 3rd Grade Math
Card 1 of 15
Which option is $286$ rounded to the nearest $10$: $280$ or $290$?
Which option is $286$ rounded to the nearest $10$: $280$ or $290$?
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$290$. Ones digit $6$ is $≥5$, so round up.
$290$. Ones digit $6$ is $≥5$, so round up.
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What is $65$ rounded to the nearest $10$?
What is $65$ rounded to the nearest $10$?
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$70$. Ones digit $5$ is $≥5$, so round up from $60$ to $70$.
$70$. Ones digit $5$ is $≥5$, so round up from $60$ to $70$.
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What is $47$ rounded to the nearest $10$?
What is $47$ rounded to the nearest $10$?
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$50$. Ones digit $7$ is $≥5$, so round up from $40$ to $50$.
$50$. Ones digit $7$ is $≥5$, so round up from $40$ to $50$.
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What rule tells you when to round up to the next ten when rounding to the nearest $10$?
What rule tells you when to round up to the next ten when rounding to the nearest $10$?
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Round up if the ones digit is $5$–$9$. Ones digit $5$ or more means round to the next ten.
Round up if the ones digit is $5$–$9$. Ones digit $5$ or more means round to the next ten.
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Which option is $768$ rounded to the nearest $100$: $700$ or $800$?
Which option is $768$ rounded to the nearest $100$: $700$ or $800$?
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$800$. Tens digit $6$ is $≥5$, so round up.
$800$. Tens digit $6$ is $≥5$, so round up.
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Find and correct the rounding error: $235$ rounded to the nearest $10$ is written as $230$.
Find and correct the rounding error: $235$ rounded to the nearest $10$ is written as $230$.
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Correct rounding: $235$ rounds to $240$. Ones digit $5$ means round up, not down.
Correct rounding: $235$ rounds to $240$. Ones digit $5$ means round up, not down.
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What is $42$ rounded to the nearest $10$?
What is $42$ rounded to the nearest $10$?
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$40$. Ones digit $2$ is $<5$, so round down to $40$.
$40$. Ones digit $2$ is $<5$, so round down to $40$.
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What digit do you look at to round a number to the nearest $10$?
What digit do you look at to round a number to the nearest $10$?
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Look at the ones digit. The ones place determines if you round up or down.
Look at the ones digit. The ones place determines if you round up or down.
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What happens to the digits to the right of the rounding place after rounding to the nearest $10$ or $100$?
What happens to the digits to the right of the rounding place after rounding to the nearest $10$ or $100$?
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All digits to the right become $0$. Rounding replaces smaller place values with zeros.
All digits to the right become $0$. Rounding replaces smaller place values with zeros.
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What is $150$ rounded to the nearest $100$?
What is $150$ rounded to the nearest $100$?
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$200$. Tens digit $5$ is $≥5$, so round up to $200$.
$200$. Tens digit $5$ is $≥5$, so round up to $200$.
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What is $372$ rounded to the nearest $100$?
What is $372$ rounded to the nearest $100$?
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$400$. Tens digit $7$ is $≥5$, so round up to $400$.
$400$. Tens digit $7$ is $≥5$, so round up to $400$.
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What is $90$ rounded to the nearest $10$?
What is $90$ rounded to the nearest $10$?
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$90$. Already ends in $0$, so it stays $90$.
$90$. Already ends in $0$, so it stays $90$.
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What rule tells you when to round down when rounding to the nearest $100$?
What rule tells you when to round down when rounding to the nearest $100$?
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Round down if the tens digit is $0$–$4$. Tens digit $4$ or less keeps the same hundred.
Round down if the tens digit is $0$–$4$. Tens digit $4$ or less keeps the same hundred.
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What is $149$ rounded to the nearest $100$?
What is $149$ rounded to the nearest $100$?
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$100$. Tens digit $4$ is $<5$, so round down to $100$.
$100$. Tens digit $4$ is $<5$, so round down to $100$.
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What is $399$ rounded to the nearest $100$?
What is $399$ rounded to the nearest $100$?
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$400$. Tens digit $9$ is $≥5$, so round up to $400$.
$400$. Tens digit $9$ is $≥5$, so round up to $400$.
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