Quiz about Unit 1 Review

Question 1

A helium atom has no charge if it has 2 protons (+) and 2 electrons (-). Which expression best represents this helium atom with no charge?

Accepted Answer

$$2+\left(-2\right)=0$$

Answer

$$2+2=0$$

Answer

$$2=-2$$

Answer

$$-2+\left(-2\right)=0$$

Question 2

Which of these situations can be represented by the opposite of -5?

Accepted Answer

Mike earns $5

Answer

A fish dives 5 feet below sea level

Answer

The football team lost 5 yards.

Answer

Susan owes her friend $5

Question 3

A recipe calls for $$3\ \frac{3}{5}$$ cups of sugar. What is the decimal equivalent of this mixed number?

Accepted Answer

$$3.6$$

Answer

$$3.35$$

Answer

$$0.6$$

Answer

$$3.\overline{6}$$

Question 4

A survey found that only 4 out of 9 people floss their teeth daily. Write the fraction as an equivalent decimal.

Accepted Answer

$$0.\overline{4}$$

Answer

$$4.9$$

Answer

$$\frac{4}{9}$$

Answer

$$0.4$$

Question 5

Select all the sums that are positive.

Accepted Answer

$$8+\left(-3\right)$$

Accepted Answer

$$-5+9$$

Accepted Answer

$$-6-\left(-8\right)$$

Answer

$$-8+\left(-3\right)$$

Answer

$$0+\left(-3\right)$$

Question 6

Sam plays a matching game. In order to go to the next level, he must score at least 10 points. He scores 18 points for correct matches and -6 points for incorrect matches. Did Sam make it to the next level?

Accepted Answer

Yes

Answer

No

Question 7

Which model represents 3 + (-1)?

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 8

What addition expression does this number line show?

Accepted Answer

$$2+\left(-5\right)$$

Answer

$$2+\left(-3\right)$$

Answer

$$2+\left(-6\right)$$

Answer

None of these

Question 9

Andrew and Jay simplified the expression $$-6-\left(-3\right)$$ .

Andrew thinks it equals -9.

Jay thinks is equals -3.

Whose answer is correct?

Accepted Answer

Jay

Answer

Andrew

Question 10

Anthony borrows $6.50 from a friend to pay for a sandwich and drink at lunch. Then he borrows $3.75 from his sister to pay a library fine. Which equation correctly represents Anthony's debt that day?

Accepted Answer

-6.50 + -3.75 = -10.25

Answer

-6.50 - (-3.75) = -10.25

Answer

-6.50 + 3.75 = -2.75

Answer

6.50 + 3.75 = 10.25

Question 11

Hannah says that 2.11 is a rational number. Is Hannah correct?

Accepted Answer

Yes

Answer

No

Question 12

Select ALL the products that are positive.

Accepted Answer

$$-3 imes-15$$

Accepted Answer

$$\left(-3\right)^2$$

Accepted Answer

$$9\cdot-3\cdot-4$$

Answer

$$6\left(-6\right)$$

Answer

$$-5\cdot-2\cdot-1$$

Question 13

Select ALL the expressions that are equivalent to $$-8.$$

Accepted Answer

$$-\frac{800}{100}$$

Accepted Answer

$$80\div\left(-10\right)$$

Answer

$$\frac{80}{100}$$

Answer

$$-80\div\left(-10\right)$$

Answer

$$\frac{-80}{-100}$$

Question 14

The circles in the model represent positive and negative units.

Which equation is true based on the model?

Accepted Answer

$$\left(-3\right)+5=2$$

Answer

$$\left(-3\right)+5=-2$$

Answer

$$\left(-3\right)+\left(-5\right)=-2$$

Answer

$$3+\left(-5\right)=2$$

Question 15

Which equation correctly models the counters shown?

Accepted Answer

-9 + 4 = -5

Answer

9 + 4 = 13

Answer

9 + (-4) = 5

Answer

-9 + (-4) = -13

Question 16

You are flying in a helicopter 150 feet above sea level. You look down and see a shark swimming 15 feet below the surface of the water. How far away are you from the shark?

Accepted Answer

165 feet

Answer

-135 feet

Answer

135 feet

Question 17

What is the distance between -8 and -6?

Accepted Answer

2

Answer

10

Answer

4

Answer

6

Question 18

Joe had $305 in his bank account. His bank charges a fee of $7.00 each month that a balance is below $500. If he makes no other deposits or withdrawals, how much money is in Joe's account at the end of three months?

Accepted Answer

$284

Answer

$298

Answer

$291

Answer

$195

Question 19

What is the distance between -1 and 10?

Accepted Answer

11

Answer

17

Answer

2

Answer

-11

Question 20

A catering company loses $110 as a result of a delay. The 5 owners of the company must share the loss equally. Which quotient represents each owner's share of the loss?

Accepted Answer

$$-110\div5$$

Answer

$$-110\div-5$$

Answer

$$110\div5$$

Answer

$$110\div-5$$

Question 21

Kristen made $$\frac{3}{8}$$ of her free throws for the season. Which decimal is equivalent to $$\frac{3}{8}?$$

Accepted Answer

0.375

Answer

37.5

Answer

3.75

Answer

3.8

Question 22

Subtract.

$$-4.2-\left(-6.9\right)$$

Accepted Answer

$$2.7$$

Answer

$$-11.1$$

Answer

$$-2.7$$

Answer

$$11.1$$

Question 23

True or False?

$$5.92+\left(-7.4\right)=-1.48$$

Accepted Answer

True

Answer

False

Question 24

Divide.

$$\frac{1}{3}\div\frac{1}{8}$$

Accepted Answer

$$2\ \frac{2}{3}$$

Answer

$$\frac{1}{24}$$

Answer

$$\frac{3}{8}$$

Answer

$$24$$

Question 25

Simplify.

$$\frac{\frac{3}{8}}{\frac{7}{10}}$$

Accepted Answer

$$\frac{15}{28}$$

Answer

$$\frac{21}{80}$$

Answer

$$1\ \frac{13}{15}$$

Answer

$$3\ \frac{17}{21}$$

Question 26

Multiply.

$$-\frac{3}{4} imes-1\ \frac{1}{5}$$

Accepted Answer

$$\frac{9}{10}$$

Answer

$$-\frac{9}{10}$$

Answer

$$-\frac{3}{4}$$

Answer

$$\frac{3}{4}$$

Question 27

Andre uses $$\frac{3}{4}$$ tsp of oregano and $$\frac{3}{8}$$ tsp of rosemary in a recipe. How much oregano and rosemary does Andre use in all?

Accepted Answer

$$1\ \frac{1}{8}tsp$$

Answer

$$\frac{1}{2}tsp$$

Answer

$$\frac{8}{9}tsp$$

Answer

$$1\ \frac{3}{8}tsp$$

Question 28

Subtract.

$$-\frac{2}{3}-\left(-\frac{7}{8}\right)$$

Accepted Answer

$$\frac{5}{24}$$

Answer

$$-1\ \frac{13}{24}$$

Answer

$$-\frac{5}{24}$$

Answer

$$1\ \frac{13}{24}$$

Question 29

Add.

$$-3\ \frac{1}{5}+\left(-2\ \frac{3}{4}\right)$$

Accepted Answer

$$-5\ \frac{19}{20}$$

Answer

$$-5\ \frac{4}{9}$$

Answer

$$-1\ \frac{11}{20}$$

Answer

$$-\frac{9}{20}$$

Question 30

True or False?

$$4\ \frac{1}{2}-\left(-2\ \frac{1}{8}\right)=2\ \frac{3}{8}$$

Accepted Answer

False

Answer

True

Question 31

What is the value of the following expression?

Accepted Answer

$$-12\ \frac{19}{21}$$

Answer

$$-12\ \frac{1}{2}$$

Answer

$$-2\ \frac{3}{4}$$

Answer

$$-2\ \frac{5}{21}$$

Unit 1 Review

33 questions

What number do you need to add to +6 to get 0? _____

A helium atom has no charge if it has 2 protons (+) and 2 electrons (-). Which expression best represents this helium atom with no charge?

Which of these situations can be represented by the opposite of -5?

A survey found that only 4 out of 9 people floss their teeth daily. Write the fraction as an equivalent decimal.

Select all the sums that are positive.

Sam plays a matching game. In order to go to the next level, he must score at least 10 points. He scores 18 points for correct matches and -6 points for incorrect matches. Did Sam make it to the next level?

Which model represents 3 + (-1)?

What addition expression does this number line show?

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