Converting Decimals, Percents, and Fractions
Convert 0.25 to a percent.
25%
Amy was absent for 12 out of 180 days of last school.
Which number represents our PART in this question?
12 is our part! 12 days are only PART of the 190 day school year.
288 sixth graders said they ride the bus.
Are the following ratios equivalent?
4 : 5
80 : 200
Yes!
4 : 5
80 : 200
Jenny has a total of 45 grapes. She only wants to put in 40% of the grapes in her fruit salad.
How many grapes should Jenny use in her salad?
18 grapes.
What is 45/50 as a decimal?
0.9
Thomas read 64% of his book. If the book is 250 pages total, how many pages has he read?
Is "250" a part or a whole?
250 is a whole! There are 250 pages TOTAL (altogether!).
A shirt regularly costs $60. However, there is a sale and the shirt is $12 off.
What percent is this discount?
$20!
Write an equivalent ratio for 5:10
1:2 , 10:20, 15:30, 20:40, etc.
Write 1% as a decimal and a fraction.
0.01
1/100
Write 3% as a fraction.
3/100
Is "21" a part or a whole?
21 is a part! Jose got 21 questions correct -- but there are more questions on the test than just these 21! Therefore, these 21 questions are only a PART of the whole test.
Ahmed is trying to calculate his grade on a quiz. He got 19 questions correct out of the 20 total questions.
What percent of questions did Ahmed get correct?
95%
Write an equivalent ratio for 2:3
4:6, 6:9, 8:12, 10:15, etc.
What percentage of people in your group have a marker that is NOT black?
Varies by group.
Write 105% as a fraction.
105/100
A bike usually costs $350 but has a 35% discount today. What is the amount of the discount in dollars?
Is $350 a part or a whole?
$350 is a whole! The bike will not cost more than $350 after the discount! We start as $350 and then subtract the discount. Therefore, the $350 is our whole.
There are 15 skittles in an entire pack. 9 of these skittles are purple.
What percent of the skittles in the pack are purple?
60%
Write 2 equivalent ratios for 47:90
94 : 180, etc.
What was the answer to the SECOND question (2.) on your Do Now?
Speed Round: 15 seconds.
10
Write 4/200 as a percent.
Hint: This may require 2 steps (conversions)!
2%
I toss a coin a total of 100 times. The coin lands on heads 48% of the time. How many time did it land on heads?
Is "100" a part or a whole?
100 is a whole!
Mr. McDowell is currently running. He plans to run a total of 12 miles. He is currently 90% of the way finished.
How many miles has Mr. McDowell already ran?
10.8 miles.
Make your own ratio. Then make an equivalent ratio.
Mr. McDowell will let you know if it's correct!
Give an equivalent ratio for the following
7:1
14:2, 21:3, 28:4, 35: 5