Exam 4: Decimals

The following bar chart shows the six most-watched television shows of all time: "Mash," "Dallas," "Cheers," "The Day After," "Roots," and "Seinfeld." What was the combined total audience of all six shows?

Perform the operation. $0.4064 + 1.6642$

Add. $- 20.71 + ( - 26.4 ) =$ ________

Estimate the quotient: $634.853 \div 73.046$

Write the fraction in decimal form. $\frac { 17 } { 128 }$

Graph $\frac { 5 } { 8 } , \frac { 1 } { 3 }$   and $- \frac { 3 } { 5 }$ on the number line. Label each point using the decimal equivalent of the fraction.

A meat slicer is designed to make slices that are 0.04 inches thick. If a sausage is 10 inches long, how many slices will result?

Estimate by rounding the addends to the nearest ten: $666.121 + 761.3142$

Divide. $( - 40.67 ) \div ( - 7 )$

Evaluate the square root without using a calculator. $- \sqrt { 0.0049 }$

Divide and round your answer to the nearest tenth. $- 4.183 \div 7.7$

Write the fraction in decimal form. Round to the nearest hundredth. $- \frac { 17 } { 18 }$

Perform the following division mentally. $17.195 \div 1,000$

An electronics company has strict specifications for silicon chips used in computers. The company will only install chips that are within 0.07 cm of the specified thickness. If the thickness specification of the chip type is 0.955 cm, find the lower and upper limit for the acceptable range of thickness of the chips.

Subtract. minus 40.7 27.1

A patient's temperature is $0.9 ^ { \circ }$ above normal. ( $98.6 ^ { \circ }$ Fahrenheit is considered normal.) What is his temperature?

In tryouts for the Olympics, a speed skater had times of 44.81, 43.36, 42.52, and 42.28 seconds. Find the average time. ( Hint: Add the numbers and divide by 4.)

Find the markup on a dozen roses if a florist buys them wholesale for $12.45 and sells them for $38.10. $ __________

Divide. $( - 17.415 ) \div ( - 7.74 )$

Evaluate the square root without using a calculator. $\sqrt { \frac { 225 } { 16 } }$