Multiplying Decimals
Approximate: 31.24689 X 44.32104
≈ 1,200
Is it possible to take the square root of -17? (√-17) Why?
No, because a positive number multiplied by a positive number is positive AND a negative number multiplied by a negative is positive.
If each candy bar contains 2 3/4 grams of fat, how many total grams in 3 1/2 candy bars?
77/8 or 9 5/8 grams of fat
Multiply: 10,000 x .061295
612.95
What is 4√81?
3
At a certain gas station, regular gas costs $3.35 per gallon. How much would 9.3 gallons cost?
$31.16
16,734,000
What is 3√-64?
-4
A circular running track is 1 4/5 miles long.
If a runner were to run around the track 3 times, how many total miles would she run?
27/5 or 5 2/5 miles
An astronomer discovers an object that is 3.26 x 105 light-years from earth. What number is that?
326,000
Which of the following are not real numbers?
A) √-36 B) 3√ -15 C) √12 D) 8√-52 E) 10√0
A and D
A patient is being given 3 1/2 milligrams of a drug per hour.
How many total milligrams of the drug will he get in 2 1/3 hours?
49/6 or 8 1/6 milligrams
Multiply 2.4 x 4.13
9.912
Place each of the following on a number line:
A) √15 B) 3√24
A is between 3 and 4 but closer to 4.
B is between 2 and 3 but closer to 3.
A person makes $12.5 per hour.
How much does that person make in 7 hours?
$87.50