Decimals

Number Names

100

12.5

twelve and five tenths

200

0.561

five hundred sixty one thousandths

300

0.074

seventy four thousandths

400

340.130

three hundred forty and one hundred thirty thousandths

OR

three hundred forty and thirteen hundredths

500

(5 x 10) + (6 x 1) + (7 x 0.01)

fifty six and seven hundredths

Expanded Form

100

4.3

(4 x 1) + (3 x 0.1) 

OR

(4 x 1) + (3 x 1/10)

200

72.52

(7 x 10) + (2 x 1) + (5 x 0.1) + (2 x 0.01)

OR

(7 x 10) + (2 x 1) + (5 x 1/10) + (2 x 1/100)

300

30.02

(3 x 10) + (2 x 0.01)

OR

(3 x 10) + (2 x 1/100)

400

eighty two thousandths

(8 x 0.01) + (2 x 0.001)

OR

(8 x 1/100) + (2 x 1/1000)

500

two hundred four and eight hundredths

(2 x 100) + (4 x 1) + (8 x 0.01)

OR

(2 x 100) + (4 x 1) + (8 x 1/100)

Standard Form

100

sixty seven and two tenths

67.2

200

5/100

0.05

300

(4 x 0.1) + (8 x 0.01) + (7 x 0.001)

0.487

400

(5 x 100) + (2 x 0.01) + (4 x 0.001)

500.024

500

(1 x 10²) + (2 x 10¹) + (3 x 1/10) + (8 x 1/100)

120.38

Rounding/Estimating

100

Round 74.635 to the nearest tenth

74.6

200

Round 7.639 to the nearest hundredth

7.64

300

Coy Wire took Miss G. out for coffee. Miss G's coffee was $5.89 and Coy's coffee was $4.12. Estimate how much Coy Wire spent on both coffees.  

Coy Wire spent about $10 on both coffees.

400

Nolan has $14.08. He buys Smencils for his friends and spends $7.99. Estimate how much money Nolan has leftover. 

Nolan has about $6.00 left.

500

Madison, Kaitlyn, and Kenzie went to the pumpkin patch. Madison picked a pumpkin that weighed 8.03 pounds. Kaitlyn picked a pumpkin that weighed 2.091 pounds. Kenzie had to have the biggest pumpkin in the pumpkin patch. She picked a pumpkin that weighed 16.74 pounds. Estimate how much their pumpkins weighed altogether.

Their pumpkins weighed about 17-18 pounds altogether.

Comparing

100

Compare using <, >, or =.

73.32 _____ 7.332

>

200

Compare using <, >, or =.

0.120 _____ 0.12

=

300

Write the numbers in order from LEAST to GREATEST.

0.672, 0.684, 0.634

0.634, 0.672, 0.684

400

Compare using <, >, or =.

7.083 ____ 7.11

<

500

Jameson drinks the most water on Monday. He drinks more water on Tuesday than Friday or Saturday, but more water on Friday than on Saturday. Match each day with the amount of water Jameson drinks.

5.75 cups, 5.25 cups, 5.185 cups, 5.785 cups 

Monday, Tuesday, Friday, Saturday

Monday: 5.785 cups

Tuesday: 5.75 cups

Friday: 5.25 cups

Saturday: 5.185 cups