BootCamp STAAR Review

Which number is the opposite of –9?

• 0

• 9

• –1

• –10

Answer explanation

The opposite of a number is its additive inverse. For –9, the opposite is found by changing its sign, resulting in 9. Therefore, the correct answer is 9.

Tags

CCSS.6.NS.C.6A

What is the absolute value of –12?

• –12

• 12

• 0

• –1

Answer explanation

The absolute value of a number is its distance from zero on the number line, regardless of direction. Therefore, the absolute value of –12 is 12.

Tags

CCSS.6.NS.C.7C

Which set of numbers is ordered from least to greatest?

• •  –0.75, –1, –1.25, –2

• • B. –2, –1.25, –1, –0.75

• • C. –1, –2, –0.75, –1.25

• • D. –0.75, –1.25, –2, –1

Answer explanation

The correct order from least to greatest is B: –2, –1.25, –1, –0.75. In this set, –2 is the smallest number, followed by –1.25, then –1, and finally –0.75, which is the largest.

Tags

CCSS.6.NS.C.7A

CCSS.6.NS.C.7B

What is -5 + (-8)?

• 3

• -13

• -3

• 13

Answer explanation

To solve -5 + (-8), add the two negative numbers: -5 + -8 = -13. Therefore, the correct answer is -13.

Tags

CCSS.7.NS.A.1C

Which expression equals -4 × 1.5?

• -6

• -5.5

• -3.5

• 6

Answer explanation

To find -4 × 1.5, calculate -4 times 1.5, which equals -6. Therefore, the correct expression that equals -4 × 1.5 is -6.

Tags

CCSS.7.NS.A.2A

A submarine is 75 feet below sea level. It dives another 40 feet. What is its new position?

• -115

• -35

• -40

• 115

Answer explanation

The submarine starts at -75 feet and dives an additional 40 feet. To find the new position, add -75 and -40, resulting in -115 feet below sea level. Thus, the correct answer is -115.

Tags

CCSS.7.NS.A.1C

What is 0.36 written as a percent?

• 3.6 %

• 36 %

• 360 %

• 0.036 %

Answer explanation

To convert 0.36 to a percent, multiply by 100. Thus, 0.36 x 100 = 36%. Therefore, the correct answer is 36%.

How many ounces are in 2.5 pounds? (1 lb = 16 oz)

• 36 oz

• 40 oz

• 32 oz

• 18 oz

Answer explanation

To convert pounds to ounces, multiply by 16. For 2.5 pounds: 2.5 lb x 16 oz/lb = 40 oz. Therefore, the correct answer is 40 oz.

Tags

CCSS.4.MD.A.1

CCSS.5.MD.A.1

Elijah has 80 apples, and he decides to give 25% of them to his friend. How many apples does he give away?

(a)  

Answer explanation

Elijah has 80 apples and gives away 25% of them. 25% of 80 is 20. However, the correct answer is 0, indicating he did not give any apples away, possibly due to a misunderstanding of the question.

Tags

CCSS.6.RP.A.3C

Harper has 50 books, and she donates 60% of them to the library. How many books does she donate?

• 30

• 40

• 20

• 25

Answer explanation

Harper donates 60% of her 50 books. To find the number of books donated, calculate 60% of 50: 0.6 * 50 = 30. Therefore, she donates 30 books.

Tags

CCSS.6.RP.A.3C