Ratios
There are 3 teachers for every 39 students. What is the ratio of teachers to students?
3:39
If Richie drives at a rate of 45 miles per hour, how far does he drive in 3 hours?
135 miles
What does percent mean?
per 100
7.8 * 4
31.2
CHECK
Who drives faster?
Ms. Berroa: 70 miles in 2 hours
Ms. Lillie: 90 miles in 3 hours
Ms. Berroa: 35 mph
Ms. Lillie: 30 mph
What number represents 100%
1
56 / 5
11.2
There are 3 teachers for every 39 students. What is the value of this ratio?
1/13
What is a unit rate?
How much of something there is compared to 1 of something else.
Write 15% as a fraction in simplified form and a decimal!
3/20
.15
4.56 * 3
13.68
Which ratio is a equivalent to 5:6?
a) 6 : 7
b) 40 : 48
c) 12: 10
d) 15: 12
40:48
I can text 27 words per minute. How many words can I text in 4 minutes?
108 words in 4 minutes
19.5
17.5 * 5.7
99.75
What is a ratio?
A ratio compares two quantities and tells us how much of one quantity there is compared to another quantity
What is the unit rate that defines the ratio relationships below?
12 : 2
18 : 3
24 : 4
6 : 1
.25 * 23 = 5.75
23 - 5.75 = 17.25
no :(
How do you know where to put the decimal when multiplying with decimal numbers?
You count how many digits are after the decimal and make sure your answer has the same amount.
It also is okay to check with mathematical reasoning what makes SENSE in the problem!