Add/Sub Integers
8 + (-7)
1
4(-8)
-32
$18 for 3 bracelets; $30 for 5 bracelets
Is these equivalent ratios? Explain.
Yes. Both equal 6
There are 15 boys and 12 girls in Ms. Smith’s class. What is the ratio of girls to boys written as a fraction in simplest form?
4/5
What is an integer?
The set of whole numbers and their opposites.
-7 + (-6)
-13
–35 divided by 7
-5
A cookie recipe that yields 48 cookies calls for 2 cups of flour. A different cookie recipe that yields 60 cookies calls for 3 cups of flour. Are these rates equivalent?
No
It took Jaivin 18 minutes to jog 4 laps. At this rate, how many minutes did it take him to jog each lap?
4.5 Mins
What is an opposite?
Every positive rational number and its negative pair.
-2 + (-3) + 5
0
–2(–9)(3) + (–14)
40
On the Mertler’s vacation to Florida, they drove 180 miles in 3 hours before stopping for lunch. After lunch they drove 120 miles in 2 hours before stopping for gas. Are these rates equivalent? Explain your reasoning.
Yes; the unit rate for each is 60 miles per hour
There are 207 students in the 9 classes at East Middle School. At this rate, how many students are in 6 classes?
138 students
What is a ratio?
A comparison of two numbers by division.
What is the value of 3 - 14?
-11
–3(–3)(–3)
-27
Nick can read 3 pages in 1 minute. Write the ordered pairs (number of minutes, number of pages read) for Nick reading for 0, 1, 2, and 3 minutes.
(0, 0), (1, 3), (2, 6), (3, 9)
Sanjeet can jump 36 times in 9 seconds. At this rate, how many jumps can he make in 27 seconds?
Jumps: 36 l ?
Time: 9 l 27
108 jumps
What is equivalent ratios?
Two ratios that have the same value.
-|-10 + 3| - |1 - 3|
-9
In one city, the rainfall was 4 inches below normal for 3 months in a row. Write a multiplication expression to represent the situation. Then find the product and explain its meaning.
3(–4); –12
The rainfall was 12 inches below normal after 3 months.
Nora can type 82 words per minute. Write the ordered pairs (number of minutes, number of words) Nora can type for 0, 1, 2, and 3 minutes.
(0, 0), (1, 82), (2, 164), (3, 246)
George found that he blinked 85 times in 15 minutes. At this rate, in how many seconds does he blink 51 times?
540 seconds
What is additive inverse?
A number that when added to a given number, results in a sum of zero.