Transcript 2-9 Rounding

© 2007 M. Tallman
Memorize this Poem
Find your number.
Look right next door.
4 or less, just ignore.
5 or more, add 1 more.
© 2007 M. Tallman
Step 1:
Circle the digit in the
place that you must
round to.
Step 2:
Draw an arrow to the
place on the right.
Round to the nearest tens place
46
Findright
yournext
number.
Look
door.
© 2007 M. Tallman
Step 1:
Circle the digit in the
place that you must
round to.
Step 2:
Draw an arrow to the
place on the right.
Round to the nearest tens place
Step 3:
If the number is four
or less, then the
circled number stays
the same.
4+1=5
Step 4:
If the number is 5 or
greater, then add 1 to
the circled number.
Step 5: All numbers
to the right of the
circled number
become zeros.
46
50
6 is not
less
than 4
54 or
or more,
less, just
add 1
ignore.
more.
© 2007 M. Tallman
46 rounded to the
nearest tens place is
40
50
46
50
46 is closer to 50 on the number line.
© 2007 M. Tallman
Step 1:
Circle the digit in
the place that you
must round to.
Step 2:
Draw an arrow to
the place on the
right.
Round to the nearest tens place
73
Findright
yournext
number.
Look
door.
© 2007 M. Tallman
Step 1:
Circle the digit in
the place that you
must round to.
Step 2:
Draw an arrow to
the place on the
right.
Step 3:
If the number is
four or less, then
the circled number
stays the same.
Step 4:
All numbers to the
right of the circled
number become
zeros.
Round to the nearest tens place
Just
Ignore!
70
3
3 is less
than 4
4 or less, just ignore.
© 2007 M. Tallman
73 rounded to the
nearest tens place is
70
73
70
80
73 is closer to 70 on the number line.
© 2007 M. Tallman
Step 1:
Circle the digit in the
place that you must
round to.
Step 2:
Draw an arrow to the
place on the right.
Round to the nearest hundreds place.
568
Findright
yournext
number.
Look
door.
© 2007 M. Tallman
Step 1:
Circle the digit in the
place that you must
round to.
Step 2:
Draw an arrow to the
place on the right.
Step 3:
If the number is four
or less, then the
circled number stays
the same.
Step 4:
If the number is 5 or
greater, then add 1 to
the circled number.
Step 5: All numbers
to the right of the
circled number
become zeros.
Round to the nearest hundreds place.
68
0
60
5
5+1=6
6 is not
less than 4
54 or
or more,
less, just
add 1
ignore.
more.
© 2007 M. Tallman
568 rounded to the
nearest hundreds place is
500
600
568
600
568 is closer to 600 on the number line.
© 2007 M. Tallman
Step 1:
Circle the digit in
the place that you
must round to.
Step 2:
Draw an arrow to
the place on the
right.
Round to the nearest thousands place.
4,289
Findright
yournext
number.
Look
door.
© 2007 M. Tallman
Step 1:
Circle the digit in
the place that you
must round to.
Step 2:
Draw an arrow to
the place on the
right.
Step 3:
If the number is
four or less, then
the circled number
stays the same.
Step 4:
All numbers to the
right of the circled
number become
zeros.
Round to the nearest thousands place.
000
4,289
Just
Ignore!
2 is less
than 4
4 or less, just ignore.
© 2007 M. Tallman
4,289 rounded to the
nearest thousands place is
4,000
4,000
4,289
5,000
4,289 is closer to 4,000 on the number line.
© 2007 M. Tallman
Step 1:
Circle the digit in the
place that you must
round to.
Step 2:
Draw an arrow to the
place on the right.
Round to the nearest hundreds place.
6,453
Findright
yournext
number.
Look
door.
© 2007 M. Tallman
Step 1:
Circle the digit in the
place that you must
round to.
Step 2:
Draw an arrow to the
place on the right.
Step 3:
If the number is four
or less, then the
circled number stays
the same.
Step 4:
If the number is 5 or
greater, then add 1 to
the circled number.
Step 5: All numbers
to the right of the
circled number
become zeros.
Round to the nearest hundreds place.
6, 4
553
00
4+1=5
5 is not
less than 4
ormore,
less, just
ignore.
54or
add 1
more.
© 2007 M. Tallman
6,453 rounded to the
nearest hundreds place is
6,500
6,453
6,500
6,000
6,453 is closer to 6,500 on the number line.
© 2007 M. Tallman
Step 1:
Circle the digit in the
place that you must
round to.
Step 2:
Draw an arrow to the
place on the right.
Round to the nearest hundreds place.
4,957
Findright
yournext
number.
Look
door.
© 2007 M. Tallman
Step 1:
Circle the digit in the
place that you must
round to.
Step 2:
Draw an arrow to the
place on the right.
Step 3:
If the number is four
or less, then the
circled number stays
the same.
Step 4:
If the number is 5 or
greater, then add 1 to
the circled number.
Step 5: All numbers
to the right of the
circled number
become zeros.
Round to the nearest hundreds place.
+1
4, 9
057
00
5
9 + 1 = 10
5 is not
10 less
hundreds
1,000.
than= 4
Time to regroup!
ormore,
less, just
ignore.
54or
add 1
more.
© 2007 M. Tallman
4,957 rounded to the
nearest hundreds place is
5,000
4,957
5,000
4,900
4,957 is closer to 5,000 on the number line.
© 2007 M. Tallman
Step 1:
Circle the digit in the
place that you must
round to.
Step 2:
Draw an arrow to the
place on the right.
Round to the nearest dollar.
$7.64
Look right next door.
Find your number.
© 2007 M. Tallman
Step 1:
Circle the digit in the
place that you must
round to.
Step 2:
Draw an arrow to the
place on the right.
Step 3:
If the number is four
or less, then the
circled number stays
the same.
Step 4:
If the number is 5 or
greater, then add 1 to
the circled number.
Step 5: All numbers
to the right of the
circled number
become zeros.
Round to the nearest dollar.
$76
0
8.04
7+1=8
6 is not
less than 4
54or
add 1
more.
ormore,
less, just
ignore.
© 2007 M. Tallman
$7.64 rounded to the
nearest dollar is
$8.00
$7.64
$7.00
$8.00
$7.64 is closer to $8.00 on the number line.
© 2007 M. Tallman
Step 1:
Circle the digit in
the place that you
must round to.
Step 2:
Draw an arrow to
the place on the
right.
Round to the nearest ten cents.
$8.24
Findright
yournext
number.
Look
door.
© 2007 M. Tallman
Step 1:
Circle the digit in
the place that you
must round to.
Step 2:
Draw an arrow to
the place on the
right.
Step 3:
If the number is
four or less, then
the circled number
stays the same.
Step 4:
All numbers to the
right of the circled
number become
zeros.
Round to the nearest ten cents.
$8.20
4
Just
Ignore!
4 =4
4 or less, just ignore.
© 2007 M. Tallman
$8.24 rounded to the
nearest ten cents is
$8.20
$8.20
$8.24
$8.30
$8.24 is closer to $8.20 on the number line.
© 2007 M. Tallman
Round to the…
1.
2.
3.
4.
5.
6.
7.
8.
9.
…nearest ten 544
1.
…nearest hundred 9,564
2.
…nearest million 12,897,876
3.
…nearest thousand 5,389
4.
…nearest hundred thousand 167,900 5.
…nearest ten cents $8.35
6.
…nearest thousand 5,785,965
7.
…nearest dollar $56.39
8.
…nearest hundred 935,987
9.
© 2007 M. Tallman
540
9,600
13,000,000
5,000
200,000
$8.40
5,786,000
$56.00
936,000