Vocabulary
Hundreds
Tens
Ones
Tenths
100

What is the name of the place value position that appears immediately to the left of the decimal point?

Ones

100

Round this number to the nearest hundreds:

1,000

1,000

100

Round this number to the nearest tens:

191

190

100

Round this number to the nearest ones:

1.63

2

100

Round this number to the nearest tenths:

1.93

1.9

200

All place values to the right of the decimal point have a name that ends in what three letters?

"-ths"

200

Round this number to the nearest hundreds:

5,431

5,400

200

Round this number to the nearest tens:

938

940

200

Round this number to the nearest ones:

2.14

2

200

Round this number to the nearest tenths:

6.89

6.9

300

All numbers to the right of a rounded place value become what after rounding?

Zero

300

Round this number to the nearest hundreds:

8,878

8,900

300

Round this number to the nearest tens:

1,677

1,680

300

Round this number to the nearest ones:

4.92

5

300

Round this number to the nearest tenths:

19.243

19.2

400

What is the name of the place value that the 5 is in?

2751.63

Tenths

400

Round this number to the nearest hundreds:

240

200

400

Round this number to the nearest tens:

7,114

7,110

400

Round this number to the nearest ones:

9.5572

10

400

Round this number to the nearest tenths:

9.971

10

500

What are the rules for rounding?

1. Find the place value you want to change. 



2. Look at the place value to the right. 


3. If the number to the right is 4 or less, the number stays the same. If it is 5 or more, the number rounds up by 1. 


4. All numbers to the right of the rounded place value become zero.
500

Round this number to the nearest hundreds:

9,999

10,000

500

Round this number to the nearest tens:

9,199

9,200

500

Round this number to the nearest ones:

99.99

100

500

Round this number to the nearest tenths:

9.9

9.9

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