Write Equations

Susan buys 3 packages of 8 apples. She uses 15 apples to make applesauce. Which equation shows how to find the number of apples, a, Susan has left?

• 3(8) - 15 = a

• 15 - 3 + 8 = a

• 3 x 8 + 15 = a

Peter had a starting balance of $482.32 in his checking account. Which equation shows how to find his balance, b, after he withdrawals $45?

• b = $482.32 + $45

• b = $482.32 - $45

• b = $482.32 x $45

Jana has two boxes of 12 cookies. She shares the cookies equally among 4 people. Which equation shows how to find the number of cookies, c, each person got?

• 12 ÷ 4 = c

• 12 ÷ c = 4

• 2(12) ÷ 4 = c

Emily had $50. Then she worked 8 hours for $10 each hour. Which expression represents this situation?

• 50 + (8 x 10)

• (50 + 8) x 10

• 50 + 8 + 10

Hannah had a budget of $30 to spend at the carnival. She spent $8 on lunch and $20 on rides. Which equation shows how to find the amount of money, m, she has left to spend?

• m = 20 - 8 + 30

• m = 30 - (20 - 8)

• m = 30 - (20 + 8)

Jonathan buys 4 sheets of 10 stamps each and 2 sheets of 8 stamps each. He uses 25 stamps on envelopes. Which equation can be used to find n, the number of stamps Jonathan has left?

• (4 + 10 x 2 + 8) - 25 = n

• 4(10) + 2(8) - 25 = n

• 4(10) + 2(8) + 25 = n

• 10 + 8 - 25

Emily's team scored 12 points in the first half of the game. At the end of the game her team had a total of 26 points. Which equation can be used to find p, the number of points her team scored in the second half of the game?

• 12 + 26 = p

• 12 - p = 26

• 12 + p = 26

Angelina listens to three songs that each last 4 minutes and two songs that each last 3.5 minutes. How many total minutes, m, does Angelina listen to music?

Sabrina purchased a case of 24 cans of soda. Each can contains 8.5 ounces of soda. Which equation shows a way to find the number of ounces of soda, s, are the entire case Sabrina purchased?

Ethan collects 18 eggs from his family’s chickens and gives 6 of the eggs to a neighbor. He does this every week for 3 weeks. Which expression represents this situation?

• (18 - 6) × 3

• (18 − 6) + 3

• (3 × 18) − 6

• 3(18 + 6)