Open Up - Grade 7 - Mathematics - Unit 6 - Lesson 12
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Last updated about 2 years ago
13 Questions
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1.
A backpack normally costs $25 but it is on sale for $21.
What percentage is the discount?(round to the nearest whole percent)
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2.
Find each product.
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3.
Find each product.
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4.
Find each product.
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5.
Find each product.
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6.
Select all expressions that show x increased by 35%.
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7.
Complete each sentence with the word discount, deposit, or withdrawal.
Clare took $20 out of her bank account. She made a _____.
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8.
Complete each sentence with the word discount, deposit, or withdrawal.
Kiran used a coupon when he bought a pair of shoes. He got a _____.
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9.
Complete each sentence with the word discount, deposit, or withdrawal.
Priya put $20 into her bank account. She made a _____.
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10.
Complete each sentence with the word discount, deposit, or withdrawal.
Lin paid less than usual for a pack of gum because it was on sale. She got a _____.
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11.
Here are two stories:
- The initial freshman class at a college is 10% smaller than last year’s class. But then during the first week of classes, 20 more students enroll. There are then 830 students in the freshman class.
- A store reduces the price of a computer by $20. Then during a 10% off sale, a customer pays $830.
Here are two equations:
0.9x + 20 = 830
0.9(x - 20) = 830
Decide which equation represents each story.
| arrow_right_alt | The freshman class | |
| arrow_right_alt | The computer |
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12.
Here are two stories:
- The initial freshman class at a college is 10% smaller than last year’s class. But then during the first week of classes, 20 more students enroll. There are then 830 students in the freshman class.
- A store reduces the price of a computer by $20. Then during a 10% off sale, a customer pays $830.
Here are two equations:
0.9x + 20 = 830
0.9(x - 20) = 830
Explain why one equation has parentheses and the other doesn’t
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13.
Here are two stories:
- The initial freshman class at a college is 10% smaller than last year’s class. But then during the first week of classes, 20 more students enroll. There are then 830 students in the freshman class.
- A store reduces the price of a computer by $20. Then during a 10% off sale, a customer pays $830.
Here are two equations:
0.9x + 20 = 830
0.9(x - 20) = 830
Solve each equation, and explain what the solution means in the situation.(round to the nearest cent)
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