Lesson 12: Practice Problems

Problem 1

Select all expressions that show $x$ increased by 35%.

$1.35 x$
$\frac{35}{100} x$
$x + \frac{35}{100} x$
$(1 + 0.35) x$
$\frac{100 + 35}{100} x$
$(100 + 35) x$

Problem 2

Complete each sentence with the word discount, deposit, or withdrawal.

Clare took $20 out of her bank account. She made a .
Kiran used a coupon when he bought a pair of shoes. He got a .
Priya put $20 into her bank account. She made a .
Lin paid less than usual for a pack of gum because it was on sale. She got a .

Problem 3

Select all the expressions that are the result of decreasing $x$ by 80%.

$\frac{20}{100} x$
$x - \frac{80}{100} x$
$\frac{100 - 20}{100} x$
$0.80 x$
$(1 - 0.8) x$

Problem 4

Which scale is equivalent to 1 cm to 1 km?

1 to 1,000
10,000 to 1
1 to 100,000
100,000 to 1
1 to 1,000,000

Problem 5 From Unit 1 Lesson 13

Triangle $D E F$ is a right triangle, and the measure of angle $D$ is $28^{\circ}$ . What are the measures of the other two angles?