The statement below describes a situation in which opposite quantities combine to make zero:
A mountain biker gets halfway up a hill and realizes he forgot his water, so he returns to his starting point. (4 points)
True
False
2.
The statement below describes a situation in which opposite quantities combine to make zero:
A cup with a hole in it loses 2 ounces of water in the first minute and then loses 2 ounces of water in the second minute. (4 points)
True
False
3.
Choose a number line below to model the situation:
After walking 5 steps forward, Julie walked 5 steps backward. (4 points)
A horizontal number line is shown with labels at negative 5, 0, and 5. A blue arrow (labeled 5 steps forward) begins at 0 and ends at 5. A red arrow (labeled 5 steps backward) begins at 0 and ends at negative 5.
A horizontal number line is shown with labels at 0 and 5. A blue arrow (labeled 5 steps forward) begins at 0 and ends at 5. A red arrow (labeled 5 steps backward) begins at 5 and ends at 0.
A horizontal number line is shown with labels at 0, 5, and 10. A blue arrow (labeled 5 steps forward) begins as 0 and ends at 5. A red arrow (labeled 5 steps backward) begins at 10 and ends at 5.
A horizontal number line is shown with labels at 0, 5, and 10. A blue arrow (labeled 5 steps forward) begins at 0 and ends at 5. A red arrow (labeled 5 steps backward) begins at 0 and ends at negative 5.
4.
Choose a number line below to model the situation:
Mandy spent $75 and then earned $75. (4 points)
A vertical number line is shown with labels at negative 75, 0, and 75. A blue arrow (labeled earned 75 dollars) begins at 0 and ends at 75. A red arrow (labeled spent 75 dollars) begins at 0 and ends at negative 75.
A vertical number line is shown with labels at negative 150, negative 75, and 0. A red arrow (is labeled spent 75 dollars) begins at 0 and ends at negative 75. A blue arrow (labeled earned 75 dollars) begins at negative 75 and ends at negative 150.
A vertical number line is shown with labels at negative 150, negative 75, and 0. A red arrow (labeled spent 75 dollars)begins at 0 and ends at negative 75. A blue arrow (labeled earned 75 dollars) begins at negative 150 and ends at negative 75.
A vertical number line is shown with labels at negative 75 and 0. A red arrow (labeled spent 75 dollars) begins at 0 and ends at negative 75. A blue arrow (labeled earned 75 dollars) begins at negative 75 and ends at 0.
5.
Choose a number line below to model the situation:
Pedro deposited $35 in his savings account, then withdrew $50. (4 points)
A horizontal number line is shown with labels at negative 50, 0, and 35. A red arrow (labeled withdrew 50 dollars) begins at 0 and ends at negative 50. A blue arrow (labeled deposited 35 dollars) begins at 0 and ends at 35.
A horizontal number line is shown with labels at negative 50 and 0. A red arrow (labeled withdrew 50 dollars) begins at 0 and ends at negative 50. A blue arrow (labeled deposited 35 dollars) begins at negative 50 and ends at negative 15.
A horizontal number line is shown with labels at negative 35, 0, and 50. A blue arrow (labeled deposited 35 dollars) begins at negative 35 and ends at 0 A red arrow (labeled withdrew 50 dollars) begins at 50 and ends at 0.
A horizontal number line is shown with a label at 0. A blue arrow (labeled deposited 35 dollars) begins at 0 and ends at 35. A red arrow (labeled withdrew 50 dollars) begins at 35 and ends at negative 15.