Rational Number Sense
Absolute Value
Add and Subtract
Multiply and Divide
PEMDAS
Real-Life Rational Numbers
Trivia
100
Write −0.45 as a fraction in simplest form.
-9/20
100
Evaluate:
∣−18∣
18
100
Evaluate:
−14+9
-5
100
Evaluate:
(−8)(−2.5)
20
100
Evaluate:
6−2(4)
-2
100
The temperature is −3.5∘degrees. It rises by 6.2 degrees.
What is the new temperature?
2.7
100
What has many keys but cannot open a single lock?
piano
200
Order the numbers from least to greatest:
200
Evaluate:
−∣−7∣+∣2−9∣
0
200
Evaluate:
3.75−(−2.6)
6.35
200
Evaluate:
-7/9 ÷14/27
-3/2
200
Evaluate:
-|3-8|+2^3
3
200
A diver is at −18.75 meters. She rises 7.4 meters and then descends 2.65 meters.
What is her final position?
-14m
200
I have no strings, but I was once made of wood.
My nose reveals when I tell a lie.
Who am I?
Pinocchio
300
Nora says:
“− 5/8 is greater than −0.6
because 5/8 >0.6.”
Is Nora correct? Explain.
Nora is incorrect.
300
Sam claims:
∣a+b∣=∣a∣+∣b∣
Use a=−6 and b=2 to decide whether Sam’s claim is true.
Sam’s claim is false.
4 is not equal to 8
300
Evaluate:
-1\1/4-0.6+|-0.35|
-1.5
300
Evaluate:
-4^2÷(-2)
8
300
A student writes:
-2^4=16
The student says the base is −2. Identify the mistake and give the correct answer.
-16
300
A bank account has a balance of −$12.50. The owner deposits $20 and then withdraws $9.75.
What is the final balance? Does making a positive deposit guarantee a positive final balance?
-$2.25
300
A family has two parents and six sons. Each son has one sister.
How many people are in the family?
9 people
400
Point A is 0.35 unit to the left of −1.2.
Point B is ∣A∣ units to the right of −2.
Find the locations of A and B.
A = -1.55
B = -0.45
400
Two rational numbers have the same absolute value. The distance between them is
7\1/2
Find both numbers.
-3 3/4 and 3 3/4
400
Evaluate. Give the answer as a fraction in simplest form.
-2\7/12+1.4-(-5/6)
-7/20
400
Evaluate:
[(-1.8)÷3/5](-7/12)+0.35
5/2
400
Evaluate:
-5-{2-[-3(4-6)]}+1/2
-1/2
400
A game awards 2.75 points for each correct answer and subtracts 1.5 points for each incorrect answer.
A team has 8 correct answers and 5 incorrect answers. What is the team’s score?
14.5 points
400
Using exactly four 4s and any mathematical operations, make 7.
4+4-4/4
500
1/6
500
Evaluate:
-3\| -7/6+ \[ 0.5-|-5/3|]| \ + |2.4-5|
Give the exact answer as a fraction.
-22/5
500
let
P=-5/6-[0.25-(-2/3)]
and
Q = -1.1+[-3/5-(-0.85)]
Which value is greater? By how much?
Q is greater by
9/10
500
Evaluate:
[(-5/8)÷1.25][(-2.4)÷(-3/10)]-0.45÷9/20
-5
500
Evaluate:
-{|-2^3+3|-[(-3/4-(-1/6))÷(-7/12)]}+3(-2/3)^2
-8/3
500
A submersible begins at
-36 2/3
It then:
rises 14.5 m,
descends 8 1/4
rises 6 5/12
The safe zone is −25 m≤position≤−20 m
Find the final position. Is it inside the safe zone? How far is it from the nearer boundary?
-24m
Inside the safe zone
1 m from the nearer boundary
500
What is the name of Simba’s father in The Lion King?
Mufasa