7.NS.A.2 Review

Front

What is the formula to calculate the total cost of an item based on its weight and price per pound?

Back

Total Cost = Weight (in pounds) × Price per pound.

Front

If Winslow buys 1.2 pounds of bananas at $1.29 per pound, how do you calculate the total cost?

Back

Total Cost = 1.2 × 1.29 = $1.55.

Front

What does it mean when a number is negative in terms of depth below sea level?

Back

A negative number indicates a position below sea level.

Front

How do you calculate the new depth of a scuba diver who dives to a coral reef that is 3.5 times their original depth of -12 feet?

Back

New Depth = Original Depth × 3.5 = -12 × 3.5 = -42 feet.

Front

What is the product of two negative numbers?

Back

The product of two negative numbers is positive.

Front

Calculate the value of (-0.6)(-2.5).

Back

(-0.6)(-2.5) = 1.5.

Front

What is the product of a negative number and a positive number?

Back

The product of a negative number and a positive number is negative.

Front

Calculate the product of -1.24 and 4.25.

Back

-1.24 × 4.25 = -5.27.

Front

How do you find the cost per ounce of a box of cereal?

Back

Cost per ounce = Total Cost / Total Ounces.

Front

If a box of cereal costs $5.49 and contains 23.4 ounces, what is the cost per ounce?

Back

Cost per ounce = 5.49 / 23.4 = $0.23.