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Math Rounding. By Grade 4. Use rounding. When the question asks you to estimate. To check your answer to see if you’ve made a mistake. When an exact answer isn’t possible. When the question asks “about how many”…?. Memorize this Poem. Find your number. Look right next door.

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## Math Rounding

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**Math Rounding**By Grade 4**Use rounding**• When the question asks you to estimate. • To check your answer to see if you’ve made a mistake. When an exact answer isn’t possible. When the question asks “about how many”…?**Memorize this Poem**Find your number. Look right next door. 4 or less, change to 0’s. 5 or more, add 1 more.**Round the number 5 871 to the nearestthousand.**Find your number. 5 871 Circle the number in the thousands place.**Round the number 5 871 to the nearestthousand.**Look right next door. 5 871 Draw an arrow to the right of the number.**Round the number 5 871 to the nearestthousand.**4 or less, change to 0’s. 5 871 8 is larger than 4 so go to the next line of the poem.**Round the number 5 871 to the nearestthousand.**5 or more, add 1 more. 5 871 Add 1 to the 5.**. Round the number 5 871 to the nearestthousand.**5 or more, add 1 more. +1 5 871 Add 1 to the 5.**. Round the number 5 871 to the nearestthousand.**5 or more, add 1 more. +1 6 000 Add 1 to the 5 ( to make 6) and all the numbers to the right of the 6 become 0’s.**The Answer**5871 rounded to the nearest thousand is 6 000**Round the number 2 317 to the nearest thousand.**Find your number. 2 317 Circle the number in the thousands place.**Round the number 2 317 to the nearest thousand.**Look right next door. 2 317 Draw an arrow to the right of the number.**Round the number 2 317 to the nearest thousand**4 or less, change to 0’s. 2 317 Since 3 is less than 4, we ignore the 2 and change the rest to 0’s.**Round the number 2 317 to the nearest thousand**4 or less, just ignore. 2 0 0 0 Change the numbers to right of 2 to 0’s.**The Answer**2327 rounded to the nearest thousand is 2 000**Round the number 3587 to the nearest hundred**Find your number. 3 587 Circle the number where the hundreds are.**Round the number 3587 to the nearest hundred**Look right next door. 3 587 Draw an arrow to the right of the circled number.**Round the number 3587 to the nearest hundred**4 or less, change to 0’s. 3 587 8 is greater than 4 so go to the next line of the poem.**Round the number 3587 to the nearest hundred.**5 or more, add 1 more. +1 3 587 Since 8 is greater than 5, add 1 to the 5.**Round the number 3587 to the nearest hundred**5 or more, add 1 more. 3 600 Change the 5 to a 6 and change all the numbers to the right to 0’s.**The Answer**3 587 rounded to the nearest hundred is 3 600**Round this number to the nearestten.**Find your number. 4 875 Circle the number in the tens place.**Round the number 4 875 to the nearest ten.**Look right next door. 4 875 Draw an arrow to the right of the circled number.**Round the number 4 875 to the nearest ten.**4 875 5 is than greater than 4 so go to the next line of the poem.**Round the number 4 875 to the nearest ten.**5 or more, add 1 more. +1 4 875 Since 5 is equal to 5, add 1 to the 7.**Round the number 4 875 to the nearest ten.**5 or more, add 1 more. 4 880 Change the 7 to a 8 and make the rest 0’s**The Answer**4 875 rounded to the nearest ten is 4 880**Now try some on your own:**6 218 rounded to the nearest ten is _ _ _ _**Now try some on your own:**6 218 rounded to the nearest ten is 6 220**Now try some on your own:**8 015 rounded to the nearest hundred is _ _ _ _**Now try some on your own:**8 015 rounded to the nearest hundred is 8 000**Now try some on your own:**2 495 rounded to the nearest thousand is _ _ _ _**Now try some on your own:**2495 rounded to the nearest thousand is 2 000**Do these on paper now:Round to the nearest 1 000**• 5789 • 3411 • 6230 • 974 • 6 899**Do these on paper now:Round to the nearest 1 000**• 5789 • 3411 • 6230 • 974 • 6 899 6000 3000 6000 1 000 7 000**Do these on paper now:Round to the nearest 100**• 5 789 • 3 411 • 6 230 • 974 • 6 899**Do these on paper now:Round to the nearest 100**5 800 3 400 6 200 1000 6 900 • 5 789 • 3 411 • 6 230 • 974 • 6 899**Do these on paper now:Round to the nearest 10**• 5 789 • 3 411 • 6 230 • 974 • 6 899**Do these on paper now:Round to the nearest 10**5 790 3 410 6 230 980 6 900 • 5 789 • 3 411 • 6 230 • 974 • 6 899

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