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Lesson: Rounding
供稿人: Pappal
There are four steps to rounding
1. Find the place value you are rounding to
There are four steps to rounding
1. Find the place value you are rounding to
2. Find the value of the number to the right
There are four steps to rounding
1. Find the place value you are rounding to
2. Find the value of the number to the right
3. Change the rounding value or keep it the same
There are four steps to rounding
3. Change the rounding value or keep it the same
1. Find the place value you are rounding to
2. Find the value of the number to the right
4. Drop the numbers for the left or add zeros
There are four steps to rounding
3.
2.
1.
4.
Change the rounding value or keep it the same
?
Find the place value you are rounding to
?
Find the value of the number to the right
?
Drop the numbers for the left or add zeros
?
There are four steps to rounding
First, find the place value you want to round to
In order to find the place values
In order to find the place values
you need to know the place values
In order to find the place values
you need to know the place values
23456.789
ten thousands
In order to find the place values
you need to know the place values
23456.789
ten thousands
thousands
In order to find the place values
you need to know the place values
23456.789
ten thousands
thousands
In order to find the place values
you need to know the place values
hundreds
23456.789
ten thousands
thousands
In order to find the place values
you need to know the place values
hundreds
23456.789
tens
ten thousands
thousands
In order to find the place values
you need to know the place values
hundreds
23456.789
tens
ones
ten thousands
thousands
In order to find the place values
you need to know the place values
hundreds
23456.789
tens
ones
tenths
ten thousands
thousands
In order to find the place values
you need to know the place values
hundreds
23456.789
tens
ones
tenths
hundredths
ten thousands
thousands
In order to find the place values
you need to know the place values
hundreds
23456.789
tens
ones
tenths
thousandths
hundredths
ten thousands
?
thousands
?
In order to find the place values
you need to know the place values
hundreds
?
23456.789
tens
?
ones
?
tenths
?
thousandths
?
hundredths
?
What number is in the tens place
2345.67
What number is in the tenths place
2345.67
What number is in the hundreds place
2345.67
What number is in the hundredths place
2345.67
What number is in the ones place
2345.67
Next we have to figure out
Next we have to figure out
the number to the right
Next we have to figure out
the number to the right
of where we want to round
Next we have to figure out
the number to the right
2345.67
of where we want to round
If we want to round
Next we have to figure out
tens
the number to the right
2345.67
of where we want to round
If we want to round
to the nearest tens
Next we have to figure out
tens
the number to the right
2345.67
of where we want to round
we look at the number to the right
If we want to round
to the nearest tens
number to the right
Next we have to figure out
tens
the number to the right
2345.67
of where we want to round
we look at the number to the right
If we want to round
to the nearest tens
What is the number to the right of the tens place
2345.678
What is the number to the right of the hundreds place
2345.678
What is the number to the right of the tenths place
2345.678
If the number to the right
If the number to the right
is 5, 6, 7, 8, or 9
If the number to the right
is 5, 6, 7, 8, or 9
then round up
If the number to the right
is 5, 6, 7, 8, or 9
if it is 
then round up
If the number to the right
is 5, 6, 7, 8, or 9
if it is 
0, 1, 2, 3, or 4
then round up
If the number to the right
is 5, 6, 7, 8, or 9
if it is 
0, 1, 2, 3, or 4
then round up
then keep it the same
Which  number would make us round up?
7 or 3
Which  number would make us round up?
0 or 5
Let's try a couple
Round this number to the nearest thousands
Let's try a couple
Round this number to the nearest thousands
Let's try a couple
43472
Find the thousands place
Round this number to the nearest thousands
Let's try a couple
43472
Find the thousands place
Round this number to the nearest thousands
Let's try a couple
43472
Find the thousands place
Look at the number to the right
Round this number to the nearest thousands
Let's try a couple
43472
Find the thousands place
Look at the number to the right
Round this number to the nearest thousands
Let's try a couple
43472
Find the thousands place
Look at the number to the right
Round this number to the nearest thousands
Since that number is 4, then the thousands place
Let's try a couple
43472
Find the thousands place
Look at the number to the right
Round this number to the nearest thousands
Since that number is 4, then the thousands place
Let's try a couple
stays the same
43472
Find the thousands place
Look at the number to the right
Round this number to the nearest thousands
Since that number is 4, then the thousands place
and everything after the rounding place 
Let's try a couple
stays the same
43472
Find the thousands place
Look at the number to the right
Round this number to the nearest thousands
Since that number is 4, then the thousands place
and everything after the rounding place 
Let's try a couple
stays the same
turns to zero
43472
Find the thousands place
Look at the number to the right
Round this number to the nearest thousands
Since that number is 4, then the thousands place
and everything after the rounding place 
Let's try a couple
stays the same
turns to zero
43000
Find the thousands place
Look at the number to the right
Round this number to the nearest thousands
Since that number is 4, then the thousands place
and everything after the rounding place 
Let's try a couple
stays the same
turns to zero
43000
Round this number to the nearest hundredths
Find the hundredth place
Round this number to the nearest hundredths
12.576
Find the hundredth place
Round this number to the nearest hundredths
12.576
Look at the number to the right
Find the hundredth place
Round this number to the nearest hundredths
12.576
Look at the number to the right
Find the hundredth place
Round this number to the nearest hundredths
12.576
Look at the number to the right
Find the hundredth place
Since that number is a 6, we will round up
Round this number to the nearest hundredths
12.576
Look at the number to the right
Find the hundredth place
Since that number is a 6, we will round up
Round this number to the nearest hundredths
12.586
Look at the number to the right
And turn the rest to zeros
Find the hundredth place
Since that number is a 6, we will round up
Round this number to the nearest hundredths
12.586
Look at the number to the right
And turn the rest to zeros
Find the hundredth place
Since that number is a 6, we will round up
Round this number to the nearest hundredths
12.580
Look at the number to the right
And turn the rest to zeros
Find the hundredth place
Since that number is a 6, we will round up
Round this number to the nearest hundredths
but since the zeros are after the decimal
12.580
Look at the number to the right
And turn the rest to zeros
Find the hundredth place
Since that number is a 6, we will round up
Round this number to the nearest hundredths
but since the zeros are after the decimal
we don't write them
12.580
Look at the number to the right
And turn the rest to zeros
Find the hundredth place
Since that number is a 6, we will round up
Round this number to the nearest hundredths
but since the zeros are after the decimal
we don't write them
12.58
Look at the number to the right
And turn the rest to zeros
Find the hundredth place
Since that number is a 6, we will round up
Round this number to the nearest hundredths
but since the zeros are after the decimal
we don't write them
12.58
Round this number to the nearest hundreds
Round this number to the nearest hundreds
4782
What number is in the hundreds place?
Round this number to the nearest hundreds
4782
Round this number to the nearest hundreds
4782
What number is to the right of the hundreds place?
Round this number to the nearest hundreds
4782
Will the 7 be rounded up or stay the same?
Round this number to the nearest hundreds
Rounded Up
Stay the same
4782
Will the numbers after 7 become zeros of disappear?
Round this number to the nearest hundreds
Become zeros
Disappear
4782
Will the numbers after 8 become zeros of disappear?
Round this number to the nearest hundreds
Remain zeros
Disappear
4800
Round this number to the nearest tenth
Round this number to the nearest tenth
56.7542
Round this number to the nearest tenth
What number is in the tenth place?
56.7542
What number is to the right of the tenth place?
Round this number to the nearest tenth
56.7542
What is the answer?
Round this number to the nearest tenth
56.7542
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