5.1 Decimals  (Page 7/8)

$1.99$

$5.83$

$15.7$

$18.1$

$0.239$

$0.373$

$0.13$

$0.19$

$0.011$

$0.049$

$\mathrm{-0.00007}$

$\mathrm{-0.00003}$

$6.4$

$5.2$

$7.05$

$9.04$

$4.006$

$2.008$

$10.25$

$12.75$

$1.324$

$2.482$

$14.125$

$20.375$

$0.8$

$0.3$

$\mathrm{-0.2}$

$\mathrm{-0.9}$

$3.1$

$2.7$

$\mathrm{-2.5}$

$\mathrm{-1.6}$

$0.9\_\_0.6$

$0.7\_\_0.8$

$0.37\_\_0.63$

$0.86\_\_0.69$

$0.6\_\_0.59$

$0.27\_\_0.3$

$0.91\_\_0.901$

$0.415\_\_0.41$

$\mathrm{-0.5}\_\_\mathrm{-0.3}$

$\mathrm{-0.1}\_\mathrm{-0.4}$

$\mathrm{-0.62}\_\mathrm{-0.619}$

$\mathrm{-7.31}\_\mathrm{-7.3}$

$0.67$

$0.49$

$2.84$

$4.63$

$0.845$

$0.761$

$5.7932$

$3.6284$

$0.299$

$0.697$

$4.098$

$7.096$

$5.781$

$1.638$

$63.479$

$84.281$

Salary Increase Danny got a raise and now makes $\text{\$58,965.95}$ a year. Round this number to the nearest:

ⓐ dollar

ⓑ thousand dollars

ⓒ ten thousand dollars.

New Car Purchase Selena’s new car cost $\text{\$23,795.95}.$ Round this number to the nearest:

ⓐ dollar

ⓑ thousand dollars

ⓒ ten thousand dollars.

Sales Tax Hyo Jin lives in San Diego. She bought a refrigerator for $\text{\$1624.99}$ and when the clerk calculated the sales tax it came out to exactly $\text{\$142.186625}.$ Round the sales tax to the nearest ⓐ penny ⓑ dollar.

Sales Tax Jennifer bought a $\text{\$1,038.99}$ dining room set for her home in Cincinnati. She calculated the sales tax to be exactly $\text{\$67.53435}.$ Round the sales tax to the nearest ⓐ penny ⓑ dollar.

How does your knowledge of money help you learn about decimals?

Explain how you write “three and nine hundredths” as a decimal.

Jim ran a $\mathrm{100-meter}$ race in $\text{12.32 seconds}.$ Tim ran the same race in $\text{12.3 seconds}.$ Who had the faster time, Jim or Tim? How do you know?

Gerry saw a sign advertising postcards marked for sale at $“10\text{for}0.99\text{¢.”}$ What is wrong with the advertised price?