Big Ideas Chapter 7.1-7.3

Choose the equation that represents:

The sum of a number b and 19 is 14.

• b + 19 = 14

• b = 19 + 14

• b + 14 = 19

Choose the equation that represents:

The product of 14 and a number v is 44.

• 14 + v = 44

• 44v = 14

• 14v = 44

The sixth grade has $1579 in its class trip fund. The total amount needed for the trip is $7300. Write an equation you can use to find the amount that needs to be raised for the trip.

• 1579a = 7300

• a + 1579 = 7300

• a = 7300 + 1579

Solve the equation. Check your solution.

a + 23 = 33

• 11

• 56

• 10

Solve the equation. Check your solution.

x - 3 = 14

• 11

• 17

• 25

Solve the equation. Check your solution.

54 = 9a

• 540

• 486

• 6

Solve the equation. Check your solution. 
 
c / 10 = 15

• 135
• 150
• 3/2

You get in an elevator and go down 7 floors. You exit on the 24th floor. Write and solve an equation to find what floor you got on the elevator.

• f - 7 = 24 ; You got on the elevator on the 31st floor.

• 24 - 7 = f ; You got on the elevator on the 17th floor.

• f + 7 = 24 ; You got on the elevator on the 1st floor.

5 less than a number is 26

• 5 - n = 26

• n + 5 = 26

• n - 5 = 26

• 5 + n = 26

Is a = 12 a solution for the equation 25 = 2a ?

• Yes, because 25 = (2)(12).

• No, because 25 does not equal (2)(12).

• Yes, because a = 12.5.

• No, because a = 12.