The Number System

What are positive numbers?

• Positive numbers are numbers greater than zero.
• Whole numbers including zero.
• Numbers less than zero.
• Negative numbers that are less than zero.

What are negative numbers?

• Negative numbers are greater than zero.
• Negative numbers are always whole numbers.
• Negative numbers are numbers that are less than zero.
• Negative numbers are only found in geometry.

What is the sum of 5 + (-3)?

Mathematical Equivalence

ON

What is the sum of (-1) + (-4)?

Mathematical Equivalence

ON

What is the sum of 5 + (-7)?

Mathematical Equivalence

ON

What is absolute value?

• The absolute value of a number is its distance from zero on the number line.
• The absolute value is the same as the number itself.
• Absolute value is the average of a set of numbers.
• The absolute value is always negative.

A hiker is currently in a valley at an elevation of 50 feet below sea level. She hikes up a hill and increases her elevation by 300 feet. What is the hiker's new elevation?

• 100 feet
• 250 feet
• 50 feet
• 300 feet

What is the difference of -3 - 5?

Mathematical Equivalence

ON

What is the difference of -7 - (-6)?

Mathematical Equivalence

ON

The temperature in North Dakota was 5F in the afternoon. By night, the temperature had decreased by 12 degrees. What was the temperature at night?

Mathematical Equivalence

ON