Applying operations on integers to solve mathematical and real-world problems

Gavin received and spent money in the following ways during the month of March.

March 5th : His mom gave him $10 for cleaning the car.

March 10th: He earned $45 for mowing the lawn.

March 24th: He spent $30 at the movie theater.

March 30th: He loaned a friend $5.

Starting from the beginning of the month to the end of the month, what are the signed numbers that represent the change in money from his perspective?

• +10, +45, -30, -5

• +10, -45, +30, +5

• +10, +55, -25, -20

• -10, -35, +5, -5

Tags

CCSS.7.NS.A.3

128 = -3x + 5(-2x + 10)

• x = -6
• x = 4
• x = 3
• x = -5

Tags

CCSS.7.NS.A.3

A dolphin was swimming 23 feet under the surface of the water. He rose 8 feet, then it dropped back down 4 feet. It rose 21 feet. What is the location of the dolphin now?

• 2 feet below sea level
• 2 feet above sea level
• 19 feet below sea level
• 15 feet below sea level

Tags

CCSS.7.NS.A.3

Evaluate the expression.

• 2
• -50
• 0
• -39

Tags

CCSS.7.NS.A.3

Jack and Jill are playing a game in which each player either wins, loses, or ties at each turn.  The winner of a turn is awarded 3 points, the loser loses 3 point and a tie is awarded 0  points.  For the first five rounds Jack had the following results: lose, win, lose, win tie.  What was Jack's point total for the five rounds?

• 0
• 3
• -3
• 15

Tags

CCSS.7.NS.A.3

The Dallas Cowboys start the first play of the game at the 50-yard line. On the first play, the cowboys lost 20 yards. On the second play, they gained 8 yards. On the next play, the quarterback was sacked, and they lost 10 yards. What yard line are the Cowboys on now? (HINT: Draw a horizontal number line)

• 48

• 28

• 50

• 25

Tags

CCSS.7.NS.A.3

A football team started on the 20 yard line.  They gained 7 yards, lost 3 yards, gained 5 yards, gained 21 yards, gained 6 yards, and lost 7 yards on their opening drive of the game.  What yard line were they on when they completed the drive? (Write the problem and just work left to right.)

• 52
• 25
• 49
• -17

Tags

CCSS.7.NS.A.3

Melissa recorded the daily low temperatures over a five-day period.
14     14      -9       -10          15
To find the average daily low temperature, Melissa must add all the values first. Which expression can be used to find the sum of the daily low temperatures in the table?

•  $14-9-10+15$  

•  $2\left(14\right)\ -\ 9\ +\ 10\ +\ 15$  

•  $14\ +\ 14\ -\ \left(9+10\right)\ +\ 15$  

•   $2\left(14\right)\ +\ 9\ -10\ +\ 15$  

Tags

CCSS.7.NS.A.3

Solve the following:

-12 ÷ 6 (-3) + 8

• -14

• 14

• -22

• 3

Tags

CCSS.7.NS.A.3

which expression does not have the value of -29?

• 
  

  $-9\times\left(-4\right)-\left(-7\right)$

• $-11-\left(-7\right)-6+\left(-19\right)$

• $-28\div7+\left(-25\right)$

• $-7\times3+56\div\left(-7\right)$

Tags

CCSS.7.NS.A.3