Number System -- 7.NS Review

What are opposite integers?

• Numbers that have the same sign and same distance from zero.

• Numbers that have the same sign and different distances from zero.

• Numbers that have different signs and different distances from zero.

• Numbers that have different signs and same distance from zero.

True or False:

Rational numbers are fractions that can be written as a decimal.

• True

• False

How do you change a rational number into a decimal?

• By dividing the denominator by the numerator.

• By dividing the numerator by the denominator.

• By dividing the numerator by the denominator and multiplying by the denominator.

• By dividing the denominator by the numerator and multiplying by the numerator.

What model can you use to represent adding and subtracting positive and negative numbers?

• Number Line

• Coordinate Plane

• Graph

• Venn Diagram

What is the value of (--870 ÷ 5) x (--6)?

• 1,044

• 29

• --29

• --1,044

Which number line models the sum of (--25) + 30 correctly?

• 
• 
• 
• 

Which situation results in a solution of 0?

• A florist making deliveries travels up 4 flights of stairs to get from the ground floor to the

  4th floor. The florist then travels down 4 flights of stairs to get back to the ground floor. How

  many total flights of stairs does the florist travel?

• A person’s bank account has a balance of $380. The person spends $380 on a new guitar.

  How much money is left in the person’s bank account?

• A tour group travels 19 miles north to visit a museum. The tour group then travels 19 miles

  west to go to a park to eat lunch. How many total miles does the tour group travel?

• The average temperature inside a freezer is −4°C. The average temperature inside a

  refrigerator is 4°C. What is the difference between the average temperatures in the freezer

  and refrigerator?

Which scenario could represent the expression --35 ÷ 7?

• A college student’s bank account decreases by a total of $35 over a period of 7 weeks. If the

  account decreases by the same amount each week, what is the change in the account per

  week?

• A party planner evenly splits 35 muffins onto 7 trays. How many muffins are on each tray?

• A teacher places a total of 35 markers among 7 bags. If the teacher puts the same number of

  markers in each bag, how many markers does the teacher place in each bag?

• A cook earns $7 per hour for a total of $35. How many hours does the cook work?

Which two equations are correct?

• −13.2 ∙ −15 = −198

• −13.2 ∙ −15 = 198

• 13.2 ∙ −15 = −198

• 13.2 ∙ −15 = 198

• 13.2 ∙ 15 = −198

What is the value of −18. 73 + (−13. 07)?

• −31.8

• −5.66

• 5.66

• 31.8