Quiz about Mastering Decimal Operations

Question 1

Emily bought the following amounts of fruit at a fruit stand:
0.75 pounds of grapes
0.5 pounds of bananas
1.25 pounds of apples

How much did her fruit weigh altogether?

Accepted Answer

2.50 pounds

Answer

0.25 pounds

Answer

2.05 pounds

Answer

25.0 pounds

Question 2

Josh bought one T-shirt for $7.90 and another T-shirt for $12.40. What is the total amount he spent?

Accepted Answer

$20.30

Answer

$4.00

Answer

$4.50

Answer

$20.00

Question 3

Justin made $46 mowing lawns during the summer. He went to the movies and spent $16.54, the arcade and spent $8.50, and the comic book store and spent $12.98. How much money does he have left?

Accepted Answer

$7.98

Answer

$5.48

Answer

$6.92

Answer

$8.21

Question 4

Haley and her 4 friends decide to go out to dinner at Applebee's. The bill for their table came to $65.30. If you wanted to calculate how much they each paid, what number would you divide by?

Accepted Answer

5

Answer

4

Answer

3

Answer

$65.30

Question 5

On Tuesday, Mr. Rodriguez bought a new video game system for $345.67. On Friday, the system went on sale for $299.99. How much money could Mr. Rodriguez have saved if he would have bought the system on Friday?

Accepted Answer

$45.68

Answer

$44.98

Answer

$154.23

Answer

$645.66

Question 6

What is the result of adding $$3.75$$ and $$2.5$$ ?

Accepted Answer

$$6.25$$

Answer

$$5.15$$

Answer

$$5.25$$

Answer

$$6.5$$

Question 7

Subtract $$4.8$$ from $$9.3$$ . What is the result?

Accepted Answer

$$4.5$$

Answer

$$5.1$$

Answer

$$4.3$$

Answer

$$5.5$$

Question 8

Multiply $$2.4$$ by $$3.5$$ . What is the product?

Accepted Answer

$$8.4$$

Answer

$$7.8$$

Answer

$$8.6$$

Answer

$$9.0$$

Question 9

Divide $$7.2$$ by $$1.2$$ . What is the quotient?

Accepted Answer

$$6.0$$

Answer

$$5.0$$

Answer

$$7.0$$

Answer

$$6.5$$

Question 10

What is the result of $$5.5 - 3.75 + 2.25$$ ?

Accepted Answer

$$4$$

Answer

$$3.5$$

Answer

$$4.5$$

Answer

$$5$$

Question 11

Round $$7.68$$ to the nearest whole number. What is the result?

Accepted Answer

8

Answer

7

Answer

7.5

Answer

8.5

Question 12

Estimate the sum of $$4.3$$ and $$5.7$$ by rounding each number to the nearest whole number first.

Accepted Answer

10

Answer

8

Answer

9

Answer

11

Question 13

What is the estimated product of $$3.6$$ and $$2.9$$ when both numbers are rounded to the nearest whole number?

Accepted Answer

12

Answer

6

Answer

9

Answer

10

Question 14

Express $$4500$$ in scientific notation.

Accepted Answer

$$4.5 imes 10^3$$

Answer

$$45 imes 10^2$$

Answer

$$0.45 imes 10^4$$

Answer

$$4.5 imes 10^2$$

Question 15

Which of the following numbers is equivalent to $$3.2 imes 10^4$$ ?

Accepted Answer

32000

Answer

320

Answer

3200

Answer

320000

Question 16

What is the result of multiplying $$(2 imes 10^3)$$ by $$(3 imes 10^2)$$ ?

Accepted Answer

$$6 imes 10^5$$

Answer

$$6 imes 10^6$$

Answer

$$5 imes 10^5$$

Answer

$$5 imes 10^6$$

Question 17

Express the sum of $$4 imes 10^4$$ and $$3 imes 10^4$$ in scientific notation.

Accepted Answer

$$7 imes 10^4$$

Answer

$$7 imes 10^3$$

Answer

$$7 imes 10^5$$

Answer

$$7 imes 10^6$$

Question 18

What is the value of the digit 5 in the number 3,582?

Accepted Answer

500

Answer

5

Answer

50

Answer

5,000

Question 19

In the number 7,349, what is the value of the digit 9?

Accepted Answer

9

Answer

90

Answer

900

Answer

9,000

Question 20

In the number 12.345, what is the value of the digit 4?

Accepted Answer

0.04

Answer

0.4

Answer

0.004

Answer

4

Question 21

Identify the place value of the digit 6 in the number 45.678.

Accepted Answer

tenths

Answer

ones

Answer

tens

Answer

hundredths

Question 22

Convert the decimal number 5.678 to its expanded form.

Accepted Answer

5 + 0.6 + 0.07 + 0.008

Answer

5 + 0.6 + 0.07 + 0.08

Answer

5 + 0.6 + 0.7 + 0.008

Answer

5 + 0.06 + 0.07 + 0.008

Question 23

Which of the following is the standard form of the expanded number 3 + 0.4 + 0.05 + 0.006?

Accepted Answer

3.456

Answer

3.4056

Answer

3.4560

Answer

3.0456

Question 24

Express the number 0.203 in expanded form.

Accepted Answer

0.2 + 0.003

Answer

0.2 + 0.03

Answer

0.2 + 0.03 + 0.003

Answer

0.2 + 0.03 + 0.0003

Question 25

Round 0.4567 to the nearest thousandth. What is the result?

Accepted Answer

0.457

Answer

0.456

Answer

0.46

Answer

0.45

Question 26

Round $$9.999$$ to the nearest hundredth.

Accepted Answer

$$10.00$$

Answer

$$9.99$$

Answer

$$9.90$$

Answer

$$9.98$$

Question 27

Round $$6.786$$ to the nearest tenth.

Accepted Answer

$$6.8$$

Answer

$$6.7$$

Answer

$$7.0$$

Answer

$$6.78$$

Question 28

Arrange the following decimals in ascending order: 0.56, 0.65, 0.506, 0.605.

Accepted Answer

0.506, 0.56, 0.605, 0.65

Answer

0.56, 0.506, 0.65, 0.605

Answer

0.605, 0.65, 0.56, 0.506

Answer

0.65, 0.605, 0.56, 0.506

Question 29

Which of the following lists the decimals in descending order: 0.89, 0.98, 0.809, 0.908?

Accepted Answer

0.98, 0.908, 0.89, 0.809

Answer

0.809, 0.89, 0.908, 0.98

Answer

0.89, 0.809, 0.98, 0.908

Answer

0.908, 0.98, 0.809, 0.89

Question 30

Identify the correct order of these decimals from smallest to largest: 0.45, 0.54, 0.405, 0.504.

Accepted Answer

0.405, 0.45, 0.504, 0.54

Answer

0.45, 0.405, 0.54, 0.504

Answer

0.504, 0.54, 0.405, 0.45

Answer

0.54, 0.504, 0.45, 0.405

Question 31

Calculate the result of $$(4.5 + 3.2) - (2.1 + 1.3)$$ .

Accepted Answer

4.3

Answer

3.3

Answer

5.3

Answer

2.3

Question 32

What is the value of $$(6.7 - 2.5) + (3.4 - 1.2)$$ ?

Accepted Answer

6.4

Answer

7.4

Answer

5.4

Answer

8.4

Question 33

Simplify the expression $$(8.9 + 1.1) - (4.5 + 2.5)$$ .

Accepted Answer

3.0

Answer

2.0

Answer

4.0

Answer

1.0

Question 34

What is the estimated product of $$5.8$$ and $$2.1$$ when both numbers are rounded to the nearest whole number?

Accepted Answer

12

Answer

10

Answer

15

Answer

18

Question 35

Estimate the square root of $$50$$ by identifying the two closest perfect squares.

Accepted Answer

7 and 8

Answer

6 and 7

Answer

5 and 6

Answer

8 and 9

Question 36

Estimate the square root of $$120$$ by rounding to the nearest whole number.

Accepted Answer

11

Answer

10

Answer

12

Answer

13

Question 37

Estimate the value of $$2 \sqrt{50}$$ as a whole number.

Accepted Answer

14

Answer

10

Answer

20

Answer

16

Question 38

Estimate as a whole number: $$4\ \sqrt[\ ]{27}-2$$

Accepted Answer

18

Answer

98

Answer

20

Answer

25

Question 39

What is the approximate value of $$\sqrt{50}$$ rounded to the nearest whole number?

Accepted Answer

7

Answer

8

Answer

9

Answer

6

Question 40

Express the number 450,000 in scientific notation.

Accepted Answer

$$4.5 imes 10^5$$

Answer

$$45 imes 10^4$$

Answer

$$4.5 imes 10^4$$

Answer

$$45 imes 10^5$$

Question 41

Which of the following is equivalent to $$7.8 imes 10^3$$ ?

Accepted Answer

7,800

Answer

780

Answer

7800

Answer

78,000

Question 42

Round 3.14159 to the nearest hundredth. What is the result?

Accepted Answer

3.14

Answer

3.15

Answer

3.16

Answer

3.13

Question 43

What is 5.678 rounded to the nearest tenth?

Accepted Answer

5.7

Answer

5.6

Answer

5.68

Answer

5.67

Question 44

Round 12.3456 to the nearest whole number. What is the result?

Accepted Answer

12

Answer

13

Answer

12.3

Answer

12.4

Mastering Decimal Operations

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