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Rounding & Estimation — Easy Worksheet 1
Grade 3 · MathSheets Name: ____________________ Date: __________
Round each number as directed. The same kind of rounding comes in different shapes.
How to solve
Find the place you are rounding to and look at the digit just to its right. If it is 5 or more, round up; if it is 4 or less, keep the digit the same. Change all digits after it to zeros.
Example
Round 94 to the nearest ten.
Answer: 90
Warm-up
Not quite. The answer is
💡 14 is between 10 and 20. Look at the ones digit: 4 is less than 5, so round down to 10.
✓ Correct!
Not quite. The answer is
💡 14 is between 10 and 20. Look at the ones digit: 4 is less than 5, so round down to 10.
💡 How to solve: Rounding & Estimation
Find the place you are rounding to and look at the digit just to its right. If it is 5 or more, round up; if it is 4 or less, keep the digit the same. Change all digits after it to zeros.
Try a similar one
Round 50 to the nearest ten.
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
Not quite. The answer is
💡 63 is between 60 and 70. Look at the ones digit: 3 is less than 5, so round down to 60.
✓ Correct!
Not quite. The answer is
💡 63 is between 60 and 70. Look at the ones digit: 3 is less than 5, so round down to 60.
💡 How to solve: Rounding & Estimation
Find the place you are rounding to and look at the digit just to its right. If it is 5 or more, round up; if it is 4 or less, keep the digit the same. Change all digits after it to zeros.
Try a similar one
Round 71 to the nearest ten.
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
Not quite. The answer is
💡 73 is between 70 and 80. Look at the ones digit: 3 is less than 5, so round down to 70.
✓ Correct!
Not quite. The answer is
💡 73 is between 70 and 80. Look at the ones digit: 3 is less than 5, so round down to 70.
💡 How to solve: Rounding & Estimation
Find the place you are rounding to and look at the digit just to its right. If it is 5 or more, round up; if it is 4 or less, keep the digit the same. Change all digits after it to zeros.
Try a similar one
Round 52 to the nearest ten.
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
Picture it
Not quite. The answer is
💡 The halfway mark is 55. 52 is before halfway, so it is closer to 50.
✓ Correct!
Not quite. The answer is
💡 The halfway mark is 55. 52 is before halfway, so it is closer to 50.
💡 How to solve: Rounding & Estimation
Find the place you are rounding to and look at the digit just to its right. If it is 5 or more, round up; if it is 4 or less, keep the digit the same. Change all digits after it to zeros.
Try a similar one
Round 17 to the nearest ten.
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
Think it through
Not quite. The answer is
💡 98 is at or past the halfway mark 95, so it rounds up to 100.
✓ Correct!
Not quite. The answer is
💡 98 is at or past the halfway mark 95, so it rounds up to 100.
💡 How to solve: Rounding & Estimation
Find the place you are rounding to and look at the digit just to its right. If it is 5 or more, round up; if it is 4 or less, keep the digit the same. Change all digits after it to zeros.
Try a similar one
Round 33 to the nearest ten.
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
Not quite. The answer is
💡 The ones digit is the one just to the right of the tens place. In 21 it is 1.
✓ Correct!
Not quite. The answer is
💡 The ones digit is the one just to the right of the tens place. In 21 it is 1.
💡 How to solve: Rounding & Estimation
Find the place you are rounding to and look at the digit just to its right. If it is 5 or more, round up; if it is 4 or less, keep the digit the same. Change all digits after it to zeros.
Try a similar one
Round 84 to the nearest ten.
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
Not quite. The answer is
💡 28 is between 20 and 30. Look at the ones digit: 8 is 5 or more, so round up to 30.
✓ Correct!
Not quite. The answer is
💡 28 is between 20 and 30. Look at the ones digit: 8 is 5 or more, so round up to 30.
💡 How to solve: Rounding & Estimation
Find the place you are rounding to and look at the digit just to its right. If it is 5 or more, round up; if it is 4 or less, keep the digit the same. Change all digits after it to zeros.
Try a similar one
Round 63 to the nearest ten.
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
Challenge
Not quite. The answer is
💡 Halfway below 20 is 15. A number exactly halfway rounds up, so 15 rounds to 20, but one less would round down. The smallest is 15.
✓ Correct!
Not quite. The answer is
💡 Halfway below 20 is 15. A number exactly halfway rounds up, so 15 rounds to 20, but one less would round down. The smallest is 15.
💡 How to solve: Rounding & Estimation
Find the place you are rounding to and look at the digit just to its right. If it is 5 or more, round up; if it is 4 or less, keep the digit the same. Change all digits after it to zeros.
Try a similar one
Round 36 to the nearest ten.
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
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Rounding & Estimation — Easy Worksheet 1
Round each number as directed. The same kind of rounding comes in different shapes.