Variables

Which equation matches this situation: Alex scored 5 goals in the first half of the soccer season. He scored more goals during the second half of the season to make a total of 12 goals.

• 12 - g = 5

• 12 - 5 = g

• 12 + 5 = g

• 5 + g = 12

Nadia doubles the amount of money she had in her bank account and now has $346.

• 2x = 346

• x + 2 = 346

• x - 2 = 346

James put all of the candy in his holiday candy stash into 5 piles. Each pile had 12 pieces in it. Which equation represents this situation?

• 5c = 12

• 12 - 5 = c

Cara Beth handed the cashier a $50 bill to purchase her items and received $23.50 in change. Which equation represents this situation using the variable, p, to represent the cost of her items.

• p + 23.5 = 50

• 50 - p = 23.5

• 50 - 23.5 = p

• 23.50 - p = 50

The 25 kids from Mr. B's class were combined with the kids in Ms. R's class for a total of 53 kids. Which equation shows this situation. Use a variable to represent the kids in Ms. R's class.

• 25 + r = 53

• 53 - 25 = r

• 53 - r = 25

• 25 - r = 53

5 friends went out to eat. The bill was split evenly among the friends. They calculated that each had to pay $18.50. Which equation represents the situation using b for the total bill.

• 18.5 - 5 = b

Bob weighed himself on a scale and found he weighs 123 pounds. Then, he picked up his cat and stood on the scale to find the total weight of 131 pounds. Which equation represents this situation using c as the weight of the cat?

• 131 - c = 123

• 123 + c = 131

• 131 - 123 = c

• 123 - c = 131

The car moves at a speed of 35 miles per hour. This means that it travels 35 miles for every hours it drives. The total number of miles driven is 158 miles. Which equation represent the situation using h for the number of hours driven.

• 35h = 158

• 158 - 35 = h

At the beginning of the game, there were 28 kids playing but some left. At the end of the game, there were only 15 kids. Which equation represents the situation using k for the kids who left?

• 15 + k = 28

• 28 - 15 = k

• 28 - k = 15

Olivia bought 14 cat toys for a total of $24.35. Which equation represents the situation using t for the cost of each toy?

• 14 + t = 24.35

• 14 - t = 24.35

• 24.35 - t = 14

• 14t = 24.35