Mathematical Expressions and Simplifications Quiz

The figure shows a series of additions and subtractions using a number line. Which expression is represented by the number line?

• -3 + 4 + 3 = 9

• -5 - 3 + 1 + 4

• 1 + 4 - 3 = 5

• -5 + 9 - 3 + 4

Which expression(s) result in positive answers, when simplified? Select ALL that apply.

• 5 - (-5)

• -3 + 2

• 2 - (-4)

• -1 + (-5)

• 6 - (-1)

What is the value of 8 + (-3) + 10 - (-20)?

• 41

• 35

• 1

• -5

What is the value of 8 + (-3) + 15 - (-40)?

• -60

• -20

• 20

• 60

Natalie has $4 in her purse. She earns $6 after babysitting her little brother. Natalie decides to buy a book for $10 with her money. How much money, in dollars, does Natalie have left in her purse, and why?

• $0 because 4 + 6 - 10 = 0

• $2 because -4 + 6 = 2

• $8 because 4 - 6 + 10 = 8

• $10 because 4 + 6 = 10

The average temperatures each day for a week in a small town are recorded in the table. What is the average temperature of the entire week?

• -7°C

• -1°C

• 0°C

• 6°C

Juan receives his bank account statement for the month in his email. What is the total effect on the account balance of this month's activity?

• The account balance will decrease by $73.17.

• The account balance will increase by $73.17.

• The account balance will decrease by $43.43.

• The account balance will increase by $43.43.

Melinda owed her mother $8.10 that she borrowed to go see a movie. She earned $6.50 babysitting her neighbors' toddler. Which calculation best represents Melinda's situation?

• -8.10 – 6.50

• 8.10 + 6.50

• -8.10 + 6.50

• 8.10 – 6.50

Melinda earned $8.10 babysitting her neighbors' toddler. She spent $6.50 to go see a movie. Which set of expressions can be used to represent Melinda's situation?

• 8.10 - 6.50 and 8.10 + (-6.50)

• 8.10 - 6.50 and 8.10 - (-6.50)

• 8.10 + 6.50 and 8.10 - (-6.50)

• 8.10 + 6.50 and 8.10 + (-6.50)

Kendall had a bank account balance of -$10 on Monday. On Tuesday, she deposited $48. On Wednesday, she decided to buy one item from the table. Which item(s) could Kendall purchase and still have a positive bank account balance? Select ALL that apply.

• Shirt

• Boots

• Pants

• Gloves

• Coat