Unit 2 Math Review

Rounding

100

Round to the nearest Whole: 3.1

3

200

Round to the nearest tenth: 4.58

4.6

300

Round to the nearest Hundredth: 4.236

4.24

400

Round to the nearest Whole: 4.7692

5

500

Round to the Nearest Hundredth: 7.99351

7.99

Decimal Notation

100

three hundred six and five tenths

306.5

200

Sixteen and sixty hundredths

16.60

300

One thousand three hundred and two tenths

1,300.2

400

Ten thousand five hundred fifty one and eighty nine hundredths

10,551.89

500

One hundred thousand eight hundred fourty five and ninety nine hundredths

100,845.99

Word Notation

100

4.5

four and five tenths

200

60.3

sixty and three tenths

300

562.13

five hundred sixty two and thirteen hundredths

400

7,356.89

seven thousand three hundred fifty six and eighty nine hundredths

500

16,945.75

sixteen thousand nine hundred forty five and seventy five hundredths

Expanded Form

100

12.4

(1 x 10) + (1x 2) + (4 x 1/10)

200

78.9

(7 x 10) + ( 8 x 1) + ( 9 x 1/10)

300

635.14

(6 X 100) + ( 3 X 10) + (5 X 1) + (1 X 1/10) + (4 X 1/100)

400

6,239.67

(6 X 1000) + (2 X 100) + (3 X 10) + (9 X 1) + (6 X 1/10) + (7 X 1/100)

500

14,753.98

(1 X 10,000) (4 X 1,000) + (7 X 100) + (5 X 10) + (3 X 1)+ (9 X 1/10) + (8 X 1/100)

Comparing Decimals

100

4.56       5.89

5.89

200

3.23         3.32

3.23

300

14.567        14.576

14.567

400

10,895.5367        10,895.5367

=

500

50,643.19000000000       50,743.1900000000000

50,743.1900000000000