MATH COURSE 1 - LESSON 11

[11] Juan ran 8 laps and rested. Then he ran some more laps. If Juan ran 21 laps in all, how many laps did he run after he rested? Write an equation and solve the problem.

• Juan ran 13 laps after he rested. 8 + l = 21

• Juan ran 8 laps after he rested. 13 + l = 21

• Juan ran 21 laps after he rested. 21 + l = 8

• Juan ran 16 laps after he rested. l + 8 = 21

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[11] Marcia went to the store with $20.00 and returned home with $7.75. How much money did Marcia spend at the store? Write an equation and solve the problem.

• $20.00 - x = $7.75, x = $12.25
• $20.00 + x = $7.75, x = -$12.25
• $20.00 - x = $7.75, x = $7.75
• $20.00 + x = $7.75, x = $12.25

[11] When Franklin got his Labrador Retriever puppy, it weighed 8 pounds. A year later, it weighed 74 pounds. How much weight did Franklin's dog gain in that year? Write an equation and solve the problem.

• The dog gained 66 pounds. Equation: 8 + g = 74

• The dog gained 82 pounds. Equation: 74 + 8 = 82
• The dog gained 62 pounds. Equation: 74 - 12 = 62
• The dog gained 86 pounds. Equation: 74 + 12 = 86

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[2] (write answer with remainder - ex: 45R3)

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[10] What is the sum of the first 5 odd numbers greater than 0?

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[10] (Research) At what temperature on the Celsius scale does water freeze?

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