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.

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Math Rounding

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Math rounding

Math Rounding

By Grade 4


Use rounding

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

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 nearest thousand

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 nearest thousand1

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 nearest thousand2

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 nearest thousand3

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 nearest thousand4

. 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 nearest thousand5

. 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

The Answer

5871 rounded to the nearest thousand is

6 000


Round the number 2 317 to the nearest thousand

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 thousand1

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 thousand2

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 thousand3

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 answer1

The Answer

2327 rounded to the nearest thousand is

2 000


Round the number 3 5 87 to the nearest hundred

Round the number 3587 to the nearest hundred

Find your number.

3 587

Circle the number where the hundreds

are.


Round the number 3 5 87 to the nearest hundred1

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 3 5 87 to the nearest hundred2

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 3 5 87 to the nearest hundred3

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 3 5 87 to the nearest hundred4

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 answer2

The Answer

3 587 rounded to the

nearest hundred is

3 600


Round this number to the nearest ten

Round this number to the nearestten.

Find your number.

4 875

Circle the number in the tens place.


Round the number 4 8 7 5 to the nearest ten

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 8 7 5 to the nearest ten1

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 8 7 5 to the nearest ten2

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 8 7 5 to the nearest ten3

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 answer3

The Answer

4 875 rounded to the nearest ten is

4 880


Now try some on your own

Now try some on your own:

6 218 rounded to the nearest ten is

_ _ _ _


Now try some on your own1

Now try some on your own:

6 218 rounded to the nearest ten is

6 220


Now try some on your own2

Now try some on your own:

8 015 rounded to the nearest hundred is

_ _ _ _


Now try some on your own3

Now try some on your own:

8 015 rounded to the nearest hundred is

8 000


Now try some on your own4

Now try some on your own:

2 495 rounded to the nearest thousand is

_ _ _ _


Now try some on your own5

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

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 0001

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

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 1001

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

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 101

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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