Integer Review

-5 - 12 =

• 7

• -7

• -17

• 17

Answer explanation

SAME SIGNS -ADD keep the sign of bigger number

Tags

CCSS.7.NS.A.1C

If you add two negative numbers, the answer is always __________

Tags

CCSS.7.NS.A.1C

A submarine 350 feet below sea level descends an additional 100 feet before ascending 175 feet. Which equation represents the scenario?

 

   

• 350 - 100 - 175 =

  75 ft above sea level

• -350 - 100 + 175 = -275 ft below sea level

• -350 - 100 - 175 =

  -625 ft below sea level

• 350 + 100 + 175=

  625ft above sea level

Answer explanation

Below sea level is a negative number. Descending represents a negative or downward movement. Ascending is a positive or upward movement.

Tags

CCSS.7.NS.A.3

   Superman is flying 425 feet above sea level.  Aquaman is swimming at -55 feet.  Which equation describes the distance between Superman and Aquaman?

• -425 - (55) = -480 ft

• -425 + 55 = -370ft

Answer explanation

Distance is always represented as absolute value.

Tags

CCSS.7.NS.A.1C

    What is the correct equation for the following number line model.

• -5 + 3 = 8

• 3 - (-5) = 8

• 3 - 8 = -5

• -5 -3 = -8

Answer explanation

Start at zero and write that number down then go forward (positive number)or backward (negative number) based on second line

Tags

CCSS.7.NS.A.1B

• 17

• 23

• -13

• -7

Answer explanation

Step 1: Different signs subtract keep sign of larger number. Step 2: Negative neighbors become positive pals

Step 3: Different signs subtract keep sign of larger number

Tags

CCSS.7.EE.B.3

• -2

• 12

• -8

• -12

Answer explanation

Absolute value is distance from zero, so it is a positive value.

Tags

CCSS.7.NS.A.3

  What is the additive inverse (zero pair) of 16 ?

• 16

• 10 + 6

• -10 - (-6)

• -16

Answer explanation

A number that is added to make the sum ZERO

Tags

CCSS.7.NS.A.1B

Tags

CCSS.7.NS.A.1C

      Mrs. Rudd did not realize her checking account had a balance of $500 when she used her debit card for a $610 purchase. Which expression represents the situation?

• 500 + 610 = 1110

• -500 + 610 = 110

• 500 -610 = -110

• -500 - 610 = -1110

Answer explanation

When you have money in your account it is a positive amount. When you purchase something it is a negative number because you are taking money out of your account

Tags

CCSS.7.NS.A.1C