Transcript File

© 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 tenth.
0.37
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 decimal
number become
zeros, or disappear.
Round to the nearest tenth.
0 .3
47
0
7 is not
less
than 4
3+1=4
54 or
or more,
less, just
add 1
ignore.
more.
© 2007 M. Tallman
0.37 rounded to the
nearest tenth is…
0.3
0.4
0.37
0.4
0.37 is closer to 0.4 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 tenth.
0.82
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 tenth.
Step 3: If the
number is four or
less, then the
circled number
stays the same.
0.82
0
Step 4: All
numbers to the
right of the circled
number become
zeros, or disappear.
2 is less
than 4
Just
Ignore!
4 or less, just ignore.
© 2007 M. Tallman
0.82 rounded to the
nearest tenths is…
0.8 0.82
0.8
0.9
0.82 is closer to 0.8 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 whole number.
4 .84
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 whole number.
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 decimal
number become
zeros, or disappear.
84
4 .0
5
0
4+1=5
8 is not
less
than 4
54 or
or more,
less, just
add 1
ignore.
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 hundredth.
0.274
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 hundredth.
Step 3: If the
number is four or
less, then the
circled number
stays the same.
0.270
4
Step 4: All
numbers to the
right of the circled
number become
zeros, or disappear.
Just
Ignore!
4=4
4 or less, just ignore.
© 2007 M. Tallman
0.274 rounded to the
nearest hundredth is…
0.27
0.27
0.274
0.28
0.274 is closer to 0.27 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 hundredth.
0.827
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 decimal
number become
zeros, or disappear.
Round to the nearest hundredth.
0
37
0.82
2+1=3
7 is not
less
than 4
54 or
or more,
less, just
add 1
ignore.
more.
© 2007 M. Tallman
0.827 rounded to the
nearest hundredth is…
0.82
0.83
0.827
0.83
0.827 is closer to 0.83 on the number line.
© 2007 M. Tallman
Round to the…
1.
2.
3.
4.
5.
6.
7.
8.
9.
…nearest tenth 1.24
…nearest whole number 12.765
…nearest hundredth 0.434
…nearest tenth 0.367
…nearest hundredth 8.598
…nearest whole number 2.854
…nearest tenth 019.95
…nearest hundredth 3.532
…nearest tenth 0.876
© 2007 M. Tallman
1.
2.
3.
4.
5.
6.
7.
8.
9.
1.2
13
0.43
0.4
8.6
3
20
3.53
0.9
Rounding numbers to the
nearest whole number will help
us to estimate what the
answer will be.
It also helps us to check to
see if our answer is
reasonable.
© 2007 M. Tallman
$46.78 - $18.55
$47 - $19
$28
© 2007 M. Tallman
Team Pair Solo
First round each number to the
nearest whole number.
Then estimate what your sum
will be.
© 2007 M. Tallman