Modeling with Expressions, Equations, and Inequalities: Writing Two-Step Equations for Situations

What equation best fits this problem:

Mr. Dent had 32 markers in his classroom. He buys new boxes of markers that have 9 markers in each box. Now, he has 86 markers. How many new boxes did he buy? Let b be the number of boxes

• 86 + 9b = 32

• 9b - 32 = 86

• 32 + 9b = 86

• 32

Tags

CCSS.HSA.CED.A.3

What equation best fits this problem:

You bought a magazine and 4 erasers. The magazine cost $5. You spent a total of $25. Let e represent the cost of the eraser. How much did each eraser cost?

• 5 - 4e = 25

• 25 + 4e = 5

• 5e = 25

• 5 + 4e = 25

Tags

CCSS.HSA.CED.A.3

What equation best represents this problem: Lee won 40 super bouncy balls playing horseshoes at her school's game night. Later, she gave two to each of her friends. She only has 8 remaining. How many friends does she have? Let f represent the number of friends.

• 8 + 2f = 40

• 40 + 2f = 8

• 40 - 2f = 8

• 40 x 2f = 8

Tags

CCSS.HSA.CED.A.3

What equation best represents this problem:

331 students went on a field trip. Six buses were filled and 7 students traveled in cars. How many students were in each bus?

• 6b + 7 = 331

• 7b + 6 = 331

• 331b + 7 = 6

• 331b + 6 = 7

Tags

CCSS.6.EE.B.6

CCSS.6.EE.B.7

What equation best fits this problem: Aliyah had $24 to spend on seven pencils. After buying them she had $10. How much did each pencil cost?

• 10p + 24 = 7

• 7p + 10 = 24

• 10p + 7 = 24

• 24p + 10 = 7

Tags

CCSS.HSA.CED.A.3

At a pizza eating competition, Devon ate four more than twice as many slices as the runner-up. If Devon ate 11 slices, then how many slices did the runner-up eat?

• 2x+4=11

• 2x-4=11

• 4x+2=11

• 2x+11=4

r divided by 8 is 9

• r/8 = 9

• 8/r = 9

• r = r/8

• 9 = 8/r

Tags

CCSS.6.EE.B.7

Translate the sentence into an equation:

 17 less than h equals 42

• 17-h=42

• h-17=42

• h+17=42

• 17+h=42

Tags

CCSS.6.EE.A.2

CCSS.6.EE.B.6

CCSS.6.EE.B.7

While at the music store, Drew bought 5 CDs, all at the same price. The tax on his purchase was $6, and the total was $61. What was the price of each CD?

• 5x + 6 = 61

• x/5 + 6 = 61

• 5/x + 6 = 61

• x + 5 + 6 = 61

Tags

CCSS.HSA.CED.A.3

Freddy received $150 for his birthday this year. This was $20 less than half the amount he received last year. How much money did Freddy receive for his birthday last year?

• x/2-20=150

• 2x-20=150

• x/2+20=150

• 2x+20=150