2. When do you use rounding?When do you use rounding?
•When the question asks you to
round.
•When the question asks you to
estimate.
• When the question asks “about
how many”…?
• To find out ABOUT what your
answer should be.
3. Memorize this PoemMemorize this Poem
Find your number.
Look right next door.
4 or less just ignore.
5 or more, add 1 more.
4. Round this number to the nearestRound this number to the nearest
tenten..
Find your number.
9 7 8
Circle the number in the tens
place.
5. Round this number to the nearestRound this number to the nearest
tenten..
Look right next door.
9 7 8
Draw an arrow to the right of the
number.
6. Round this number to the nearestRound this number to the nearest
tenten..
4 or less, just ignore.
9 7 8
8 is larger than 4 so go to the
next line of the poem.
7. Round this number to the nearestRound this number to the nearest
tenten..
5 or more, add 1 more.
9 7 8
Add 1 to the 7.
+1
8. Round this number to the nearestRound this number to the nearest
tenten..
5 or more, add 1 more.
9 8 0
Add 1 to the 7 and all the
numbers to the right of the 8
become 0’s.
10. Round this number to the nearestRound this number to the nearest
hundredhundred..
Find your number.
3 2 7
Circle the number in the hundreds
place.
11. Round this number to the nearestRound this number to the nearest
hundredhundred..
Look right next door.
3 2 7
Draw an arrow to the right of the
number.
12. Round this number to the nearestRound this number to the nearest
hundredhundred..
4 or less, just ignore.
3 2 7
Since 2 is less than 4 we do
not change the 3.
13. Round this number to the nearestRound this number to the nearest
hundredhundred..
4 or less, just ignore.
3 0 0
Change the numbers to right
of 3 to 0’s.
15. Let’s practiceLet’s practice
Practice 1
Practice 2
Practice 3
Practice 4
Practice 5
Practice 6
Practice 7
Practice 8
Practice 9 Bonus: See how
to round money
16. Round this number to the nearestRound this number to the nearest
tenten..
564
A. 560 B. 500
C. 570 D. 600
17. Round this number to the nearestRound this number to the nearest
hundredhundred..
1,792
A. 1,700 B. 1,790
C. 1,800 D. 2,000
18. Round this number to the nearestRound this number to the nearest
tenten..
406
A. 400 B. 500
C. 410 D. 600
19. Round this number to the nearestRound this number to the nearest
hundredhundred..
714
A. 720 B. 710
C. 800 D. 700
20. Round this number to the nearestRound this number to the nearest
tenten..
227
A. 200 B. 230
C. 220 D. 300
21. Round this number to the nearestRound this number to the nearest
hundredhundred..
1,131
A. 1,130 B. 100
C. 1,100 D. 1,200
22. Round this number to the nearestRound this number to the nearest
tenten..
911
A. 910 B. 920
C. 900 D. 1,000
23. Round this number to the nearestRound this number to the nearest
hundredhundred..
952
A. 900 B. 1,000
C. 950 D. 960
24. Round this number to the nearestRound this number to the nearest
tenten..
797
A. 790 B. 700
C. 800 D. 710
25. You got it right!You got it right!
Good Work!Good Work!
27. Round this number to the nearestRound this number to the nearest
poundpound..
Find your number.
£ 5. 8 7
Circle the number where
the dollars are.
28. Round this number to the nearestRound this number to the nearest
poundpound..
Look right next door.
£ 5. 8 7
Draw an arrow to the right of
the circled number.
29. Round this number to the nearestRound this number to the nearest
poundpound..
4 or less, just ignore.
£ 5. 8 7
8 is greater than 4 so go to the
next line of the poem.
30. Round this number to the nearestRound this number to the nearest
poundpound..
5 or more, add 1 more.
£ 5. 8 7
Since 8 is greater than 5 add 1
to the 5.
+1
31. Round this number to the nearestRound this number to the nearest
poundpound..
5 or more, add 1 more.
£ 6. 0 0
Change the 5 to a 6 and change all
the numbers to the right to 0’s.
