Brain Teasers

John and Kamira are playing a game. John's score (J) and Kamira's score (K) after round 1 are shown on the number line.

The score recorded at the end of the first round is 2.

What could this score represent?

• the sum of John's score and Kamira's score

• the difference between John's score and Kamira's score

• the absolute value of the difference of John's score and Kamira's score

• the sum of the absolute value of John's score and the absolute value of Kamira's score

Simplify

(2)(18)÷(−2+5)(−1)

• -13

• -12

• 12

• 13

A football team loses 5 yards on each of 3 consecutive plays. What signed number represents the team's total loss of yards on the 3 plays?

• 5 (-3) = 15

• -5 (-3) = -15

• -5 (3) = -15

• (5) 3 = 15

The selling price of a house dropped from $250,000 to $210,000 over a period of 5 years. By what percentage did the selling price decrease?

• 16%

• 45%

• 25%

• 5%

During one week, Sheila made several changes to her bank account. She made four withdrawals of $40 each from an ATM. She also used her check card for a $156 purchase. Then she deposited her paycheck of $375.

By how much did the amount in her bank account change during that week?

• +59

• -59

• +691

• -691

Which expression is equivalent to:

-7(y - 2)

• -7y - 2

• -7y - 14

• -7y + 2

• -7y + 14

How many total squares are there?

• 9

• 10

• 14

• 15

When Lisa was 6 years old, her sister was half her age. When Lisa is 40 years old, how old is her sister?

• 80

• 20

• 37

• 46

The total cost of a pair of shoes and a hoodie is $150. The hoodie costs $100 more than the shoes. How much do the shoes cost?