Brain Teasers
Negative Integers
Factoring
Money/Rounding
Finding the Value of x
100
Billy's mother had five children. The first was named Lala, the second was named Lele, the third was named Lili, the fourth was named Lolo. What was the fifth child named?
Billy
100
-5 + 16 = ?
11
100
x2 + x - 42 = 0
x=-7
x=6
100
What is the total amount?
$126.00
One hundred twenty-six dollars
100
-6x = -48
x=8
200
A man was walking in the rain in the middle of nowhere without a coat or an umbrella. He got soaked, but not a single hair on his head was wet. How can this be?
The man is bald
200
-75 + (-78) = ?
-153
200
x2 + 5x + 6 = 0
x=-3
x=-2
200
What is the total amount?
$1.73
200
5x + 1 = 6
x=1
300
A truck driver is going down a one-way street the wrong way, and passes at least ten cops. Why is she not caught?
She is walking on the sidewalk
300
-240 - (-24) = ?
-216
300
x2 + 2x - 3 = 0
x=1
x=-3
300
Round 2,084 to the nearest tens
2,080
300
-3x + 4 = 13
x=-3
400
Three doctors said that Paul was their brother. Yet, Paul claims he has no brothers. Who is lying?
No-one, the doctors are Paul's sisters
400
-337 x -98 = ?
33,026
400
3x2 + 3x - 36 = 0
x=-4
x=3
400
Round 26,092 to the nearest ten thousand
30,000
400
75 + 2x = 81
x=3
500
With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims proclaiming might; physically joining with a single bite.
Stapler
500
-8,462/20
Round to the nearest whole number.
-423
500
x2 + 5x + 6 = 20
x=2
x=-7
500
This weekend, Sarai went to La Palmera mall and spent money at Forever 21 and H&M. Sarai bought 2 shirts for $12.00 each, and a pair of pants for $26.00. About how much did Sarai spend in total rounding to the nearest tens?
$50.00
500
47 - 3x = 32
x=5