Solving for Unknowns Word Problems

WRITE AN EQUATION
Lilli spent half of her weekly allowance playing mini-golf. To earn more money her parents let her wash the car for $4. What is her weekly allowance if she ended with $12?

• -x/2 + 4 = 12
• x/2 - 4 = 12
• 12 - 4 = x
• 12 - 4 = -x/2

Tags

CCSS.HSA.CED.A.3

WRITE AN EQUATION
For a field trip 4 students rode in cars and the rest filled nine buses. How many students were in each bus if 472 students were on the trip?

• 4x=472
• 9x=472
• 4+9x=472
• 4+x=472

Tags

CCSS.HSA.CED.A.3

After paying $5.12 for a salad, Kamauri has $27.10. How much money did he have before buying the salad?

• n + $5.12 = $27.10
• n - $5.12 = $27.10
• n - $5.12 = -$27.10
• $5.12 - n = $27.10

Tags

CCSS.HSA.CED.A.3

Mary earns $14 per hour. Which equation represents how many hours she worked to earn $112? 

• 14h = 112
• 14 / h = 112
• h + 14 = 112
• h - 14 = 112

Tags

CCSS.HSA.CED.A.3

In this soccer season, Emma has scored 1 more than twice the number of Nick's goals.  If Emma has scored 15 goals, which equation can be used to find x, the number of Nick's goals?

• x - 15 = 1
• x + 1 = 15
• 2x + 1 = 15
• x + 1 = x + 15

Tags

CCSS.HSA.CED.A.3

Which equation would describe "two times a number plus five equals 15"?

• x + 5 = 15
• 2x + 5=15
• x + 2(5) = 15
• 2(x + 5) = 15

A taxi charges $3, plus $1.50 for each mile traveled.  Mr. Lewis rode in the taxi from his home to the airport and was charged $30.  How many miles does Mr. Lewis live from the airport?

• 18 miles
• 20 miles
• 22 miles

Tags

CCSS.7.EE.B.4A

Talk time Phone Company charges $0.12 per minute of phone use plus a monthly service fee of $8.00 for its phone service.  Which equation below can be used to find c, the total cost for one month when m, minutes are used?

• c = 0.12m + 8m
• c = 8m + 0.12m
• c = 0.12m + 8
• c = 0.20m

Tags

CCSS.6.EE.C.9

Daniel is paid $10 per week for selling newspaper subscriptions.  He is also paid $3.50 for each new customer (x) that signs up for the subscription.  Which equation represents the amount (y) Daniel earns  per week?

• y = 3.5x
• y= 10 + x
• y = 10 + 35x
• y = 10 + 3.5x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Last Friday Trevon had $29. Over the weekend he received some money for cleaning the attic. He now has $41. How much money did he receive?

• 29 - n = 41
• 29 - n = 40
• 29 + n = 41
• 29 + n = 40

Tags

CCSS.HSA.CED.A.3