Open Up - Grade 7 - Mathematics - Unit 6 - Lesson 6

A school ordered 3 large boxes of board markers. After giving 15 markers to each of 3 teachers, there were 90 markers left. The diagram represents the situation. How many markers were originally in each box?

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7.EE.3

7.EE.4.a

The diagram can be represented by the equation 25 = 2 +6x. Explain where you can see the 6 in the diagram.

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7.EE.3

7.EE.4.a

Match each equation to a storyJada’s teacher fills a travel bag with 5 copies of a textbook. The weight of the bag and books is 17 pounds. The empty travel bag weighs 3 pounds. How much does each book weigh?

• 3 (x + 5) = 17
• 3x + 5 = 17
• 5 (x + 3) = 17
• 5x + 3 = 17

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7.EE.3

7.EE.4.a

Match each equation to a storyA piece of scenery for the school play is in the shape of a 5-foot-long rectangle. The designer decides to increase the length. There will be 3 identical rectangles with a total length of 17 feet. By how much did the designer increase the length of each rectangle?

• 3 (x + 5) = 17
• 3x + 5 = 17
• 5 (x + 3) = 17
• 5x + 3 = 17

Tags

7.EE.3

7.EE.4.a

Match each equation to a storyElena spends $17 and buys a $3 book and a bookmark for each of her 5 cousins. How much does each bookmark cost?

• 3 (x + 5) = 17
• 3x + 5 = 17
• 5 (x + 3) = 17
• 5x + 3 = 17

Tags

7.EE.3

7.EE.4.a

Match each equation to a storyNoah packs up bags at the food pantry to deliver to families. He packs 5 bags that weigh a total of 17 pounds. Each bag contains 3 pounds of groceries and a packet of papers with health-related information. How much does each packet of papers weigh?

• 3 (x + 5) = 17
• 3x + 5 = 17
• 5 (x + 3) = 17
• 5x + 3 = 17

Tags

7.EE.3

7.EE.4.a

Match each equation to a storyAndre has 3 times as many pencils as Noah and 5 pens. He has 17 pens and pencils all together. How many pencils does Noah have?

• 3 (x + 5) = 17
• 3x + 5 = 17
• 5 (x + 3) = 17
• 5x + 3 = 17

Tags

7.EE.3

7.EE.4.a