Rational Numbers
A temperature is 7 degrees below zero. Write it as a number.
-7
What is the opposite of 9?
-9
What is 2.5 + 1.75?
4.25
What is the GCF of 12 and 18?
6
6 + 4 × 3
18
Which is greater: −8 or −3?
-3
What is the opposite of −16?
16
What is 10 − 3.6?
6.4
What is the GCF of 36 and 48?
12
What property is shown? 5 + 7 = 7 + 5
Commutative Property of Addition
A submarine is at −120 feet. What does 0 represent?
Sea Level
What is the opposite of the opposite of −25?
-25
A recipe needs ¾ cup of flour. You make 2 batches. How much flour do you need?
1½ cups
What is the LCM of 6 and 8?
24
Use the distributive property to solve: 6 × 23
138
A bank account changes by −$25. What does the negative sign mean?
The balanced decreased by $25 or it was withdrawn from the account.
A number is 12 units to the left of 0. What is the number and its opposite?
-12 and 12
You have $25. You spend $8.75 and then $4.50. How much money remains?
$11.75
What is the LCM of 4 and 9?
36
Evaluate: (18 − 6) ÷ 3 + 2²
8
A hiker is at −40 feet. Another hiker is at −15 feet. Which hiker is higher, and how do you know?
The hiker at −15 feet because −15 is farther to the right on the number line and is closer to 0.
Explain why −18 and 18 are opposites.
A container has 6½ gallons of water. You use 2¾ gallons. How much remains?
3¾ gallons
A teacher has 24 pencils and 36 erasers. She wants to make identical bags using all the supplies. What is the greatest number of bags she can make?
12 bags
Evaluate: 3² + 4 × (10 − 6)
25