Ratios and Proportions
What is the value of a ratio? How is it written?
The simplest form of a ratio, written as a fraction.
Percent ratios are always out of ________
100
What is the opposite of -5?
5
What is the reciprocal of one and two-fifths?
5/7
Find the number that makes the ratio below equivalent to 12:8.
?:56
84
How do you write 4/25 as a percentage? Write your answer using a percent symbol.
16%
Badwater Basin in eastern California, which is the driest and hottest place in the US, has an elevation of 282 feet below sea level.
What integer represents Badwater Basin's elevation?
-282 feet
581.3 ÷ 100 = ?
5.813
A 4-pack of sweatshirts costs $6.56. What is the unit price?
$1.64 per sweatshirt
What number is 40% of 75?
30
What is the definition of the absolute value of a number?
The distance from zero to that number on a number line
What is the greatest common factor of 72 and 96?
24
A recipe requires a ratio of 2 cups of sesame seeds to 5 cups of pretzels. Using this ratio, how many cups of pretzels are needed when 3 cups of sesame seeds are used?
7.5 cups of pretzels
Ian has a budget of $500 to decorate his bedroom. He plans to spend 35% of his budget on painting supplies. How much does Ian plan to spend on painting supplies?
$175
Tyrone deposits $65 into his bank account. The next day he withdraws $20. Which two integers represent the activity in Tyrone’s bank account?
(+)65 and -20
Two smart lightbulbs are switched on at the same time. If one lights, every 10 minutes and the other every 16 minutes, when will they light together?
After 80 minutes
The Harlem Library counts the number of adults and children visiting in one day and finds that for every 8 children, there are 20 adults. If there were 36 more adults than children, how many adults visited the library that day?
60 adults
Mona is playing the video game Cosmos in Chaos. In the game, she has to collect lots of cosmos crystals before she can unlock the last level. So far, she has collected 224 crystals, which is 28% of the crystals that she needs. How many more crystals does she need to collect to unlock the last level?
576 crystals
Put these numbers in order from least to greatest.
5.6, -3/5, 32/40, 5, -29/5
-29/5, -3/5, 32/40, 5, 5.6
Green Grass Landscaping spread 8 1/8 pounds of grass seed evenly over 5 lawns. If each lawn was the same size, how many pounds of grass seed did each lawn get? (Write your answer as a fraction or as a whole or mixed number.)
13/8 pounds or 1 and five-eighths pounds
A quart of milk can feed either 6 cats or 10 kittens. Suppose there are 3 quarts of milk and 15 cats. After all the cats are fed, how many kittens can be fed with the leftover milk?
5 kittens