Math Review

Decimal Place Value

100

Write in standard form:

(7 x10) (3 x 1) + (6 x 1/10) + (2 x 1/1,000)  

73.602

200

10 times as much as 0.2 is?

2.0

300

Write the value of the underlined digit  0.476

.4, 4/10 or four tenths

400

Write this number in expanded form:  4,678.45

(4 x 1,000) + (6 x 100) +(7 x 10) + (8 x 1) + ( 4 x 1/10) + (5 x 1/00)  

500

Write in word form:

21.751

Twenty-one and seven hundred fifty one thousandths

Decimal-Fraction Relationships

100

Write as a decimal:

67/100

0.67

200

Write as a fraction:

0.4

4/10

300

Write as a decimal:

7 x 1/1000

0.007

400

Write as a fraction:

0.80

8/10 or 80/100

500

Write as a decimal:

21/100

0.21

Comparing/Ordering decimals

100

Compare the following number using the appropriate symbols >, =, <    

 45.745         45.756

< , less than

200

Order from least to greatest: 

0.524, 0.067, 0.189, and 0.631

0.067 , 0.189, 0.524, 0.631

300

Compare the following number using the appropriate symbols >, =, < 

0.004    0.014

<, less than

400

Compare the following number using the appropriate symbols >, =, <   

1.24    1.240

= , equal

500

Order from greatest to least: 

2.034 , 2.134 , 2.256, 2.135

2.256 , 2.135 , 2.134 , 2.034

Rounding

100

Round the following number to the nearest tenths place  

4.267

4.3

200

Round the following number to the nearest hundredths place 

9.489    

9.49

300

Round the following number to the nearest tenths place  

0.07      

0.1

400

Round the following number to the nearest whole number. 

 34.61    

35.0

500

Round the following number to the nearest whole number.

  5.34    

5.0

Math Story

100

Yankee Stadium sold 745,305 tickets this year. Write this number in expanded form.

7 x 100,000 + 4 x 10,000 + 5 x 1,000 + 3 x 100 + 5 x 1

200

Mrs. Vetere ordered 6,000 pencils for our school. Only 1/10 of them arrived. How many pencils did she receive?

600 pencils

300

Johnny was running a race at school. He ran the first lap in 57.25 seconds, the second lap in 57.92 seconds, and the 3rd lap in 57.83 seconds. Order Johnny’s lap times from greatest to least.

57.92 , 57.83 , 57.25

400

137.25 is the value of one number. In another number, the 7 represents a value 1/10 of the 7 in 137.25. 

What is the value of the 7 in this new number?

0.7

7 tenths

seven tenths

7 x 1/10

500

What is the place value relationship between 0.04 and 0.004?

0.04 is 10 x greater than 0.004

0.004 is 1/10 of 0.04