Quiz about Questions 1-3: Decimal Operations and Estimation

Question 1

Which power of 10 moves the decimal point 5 places to the right when multiplying a number?

Accepted Answer

$$10^5$$

Answer

$$10^3$$

Answer

$$10^4$$

Answer

$$10^2$$

Question 2

Estimate: 173.3 + 78.4. Which is the best estimate?

Accepted Answer

240

Answer

270

Answer

220

Answer

250

Question 3

Estimate: 108.8 + 159.3. Which is the best estimate?

Accepted Answer

250

Answer

270

Answer

220

Answer

240

Question 4

Ben rides his bike for 3 days. Each day he rides 2.5 miles. How far does Ben ride his bike in total?

Accepted Answer

7.5 miles

Answer

5.5 miles

Answer

6.5 miles

Answer

8.5 miles

Question 5

Which of the following is equivalent to 0.6?

Accepted Answer

6/10

Answer

60/10

Answer

0.06

Answer

6

Question 6

A bakery sells 24 boxes of cookies. Each box has 6 cookies. How many cookies are sold in total?

Accepted Answer

144

Answer

120

Answer

124

Answer

140

Question 7

One lap around an indoor track is 0.15 mile. Brett runs 9 laps around the track. Which pair of 100-grid models best represents the total distance Brett runs? Each fully shaded grid represents 1.00 mile; each column is 0.10 mile. Choose the pair that shows 1.35 miles.

Accepted Answer

Two grids with the first completely shaded and the second shaded 3 columns and half of the next column

Answer

Two grids with both completely shaded and the second missing 0.65 of a grid

Answer

Two grids with the first shaded 0.90 and the second shaded 0.45

Answer

Two grids with the first completely shaded and the second shaded 0.25

Question 8

One lap around an indoor track is 0.15 mile. Brett runs 9 laps. What is the total distance Brett runs?

Accepted Answer

1.35 miles

Answer

1.15 miles

Answer

1.25 miles

Answer

1.5 miles

Question 9

A 135-page notebook has 33 writing lines on each page. What is the total number of writing lines in the entire notebook?

Accepted Answer

3,465

Answer

4,155

Answer

2,970

Answer

1,485

Question 10

A runner needs to complete 2 miles. After running 1.35 miles, how many miles remain?

Accepted Answer

0.55 mile

Answer

0.45 mile

Answer

0.65 mile

Answer

0.75 mile

Question 11

Mike wants to save $$1,750 in the next 12 months. He plans to save $$ 150 each month for the first 11 months. What is the total amount of money Mike will save during the first 11 months?

Accepted Answer

$1,650

Answer

$1,500

Answer

$1,700

Answer

$1,750

Question 12

Mike plans to save the same amount in the 12th month as in each of the other months. If he needs a total of $$1,750 and he saved $$ 150 each month for 11 months, how much will he still need to save in the 12th month?

Accepted Answer

$50

Answer

$80

Answer

$100

Answer

$150

Question 13

Based on your previous result, will saving $$150 in the 12th month allow Mike to reach his $$ 1,750 goal?

Accepted Answer

Yes, because $150 is more than he needs

Answer

Yes, because $150 is less than he needs

Answer

No, because $150 is less than he needs

Answer

No, because $150 is more than he needs

Question 14

If Mike saves $160 each month for 12 months, how much will he save in total?

Accepted Answer

$1,920

Answer

$1,720

Answer

$1,800

Answer

$2,000

Question 15

Which statement best describes rounding 7.46 to the nearest tenth?

Accepted Answer

It rounds down to 7.4 because the hundredths digit is less than 5

Answer

It rounds up to 7.5 because the hundredths digit is less than 5

Answer

It rounds up to 7.6 because the tenths digit is 4

Answer

It rounds down to 7.3 because the tenths digit is 4

Question 16

Round 12.78 to the nearest tenth.

Accepted Answer

12.8

Answer

12.7

Answer

12.9

Answer

13.0

Question 17

Round 5.14 to the nearest tenth.

Accepted Answer

5.1

Answer

5.0

Answer

5.2

Answer

5.3

Question 18

Which number is closest to 9.3 when rounded to the nearest tenth?

Accepted Answer

9.34

Answer

9.24

Answer

9.26

Answer

9.36

Question 19

In the number 64.58, how many times greater is the value of the 5 than the value of the 8?

Accepted Answer

5 is 10 times the value of 8

Answer

5 is 10 times greater than 8

Answer

5 is 1/10 the value of 8

Answer

5 and 8 have the same value

Question 20

Which statement is true about the digits in 3,407?

Accepted Answer

The value of 3 is one hundred times the value of 4

Answer

The value of 3 is ten times the value of 4

Answer

The value of 4 is ten times the value of 7

Answer

The value of 4 is ten times the value of 0

Question 21

Which comparison shows correct place-value reasoning?

Accepted Answer

In 7,777 the hundreds 7 is ten times the tens 7

Answer

In 2,560 the 5 is ten times the 2

Answer

In 8,091 the 8 is 100 times the 0

Answer

In 9,045 the 9 is one-tenth the 0

Question 22

Renee buys 22 rolls of tape for a craft project. There are 185 inches of tape on each roll. What is the total length of tape on all of the rolls?

Accepted Answer

4,070 inches

Answer

3,850 inches

Answer

4,185 inches

Answer

5,070 inches

Question 23

Select the total cost of 3 notebooks priced at $$2.45 each and a pen that costs $$ 1.30.

Accepted Answer

$9.65

Answer

$6.15

Answer

$8.75

Answer

$12.15

Question 24

A bakery sells muffins for $0.85 each. What is the cost of 14 muffins?

Accepted Answer

$11.90

Answer

$10.50

Answer

$12.40

Answer

$13.85

Question 25

A shirt costs $$12.75 and a hat costs $$ 8.60. What is the total amount of money needed to buy both items?

Accepted Answer

$21.35

Answer

$20.15

Answer

$21.25

Answer

$22.25

Question 26

A plant grows 18 centimeters each week. How many centimeters will it grow in 9 weeks?

Accepted Answer

162 cm

Answer

126 cm

Answer

144 cm

Answer

198 cm

Question 27

A diagram shows $$8.49 and $$ 12.86 placed on a bar labeled total. What is the total amount of money the boys have?

Accepted Answer

$20.35

Answer

$21.35

Answer

$21.25

Answer

$20.25

Question 28

Using mental math, what is the difference between $$12.86 and $$ 8.49?

Accepted Answer

$4.47

Answer

$4.37

Answer

$4.57

Answer

$4.27

Question 29

A snack costs $1.70 each. If a student buys 2.5 snacks (interpreting as 2 and a half servings), what is the total cost?

Accepted Answer

$4.05

Answer

$3.75

Answer

$4.25

Answer

$4.15

Question 30

A store sells pencils for $0.70 each. What is the cost of 2.5 pencils?

Accepted Answer

$1.75

Answer

$1.65

Answer

$1.80

Answer

$1.85

Question 31

A bar model shows a total of $$21.35 split into $$ 12.86 and an unknown amount. What is the unknown amount?

Accepted Answer

$8.49

Answer

$8.39

Answer

$9.49

Answer

$7.49

Question 32

Luke has $$12.86. Carter has $$ 8.49. How much more money does Luke have than Carter?

Accepted Answer

$4.37

Answer

$4.27

Answer

$3.63

Answer

$21.35

Question 33

Keith places 19 bricks end-to-end, each 0.75 feet long. What is the total length of all the bricks?

Accepted Answer

16.25 ft

Answer

13.25 ft

Answer

14.25 ft

Answer

15.25 ft

Question 34

Round $7.49 to the nearest dollar.

Accepted Answer

$7

Answer

$8

Answer

$6

Answer

$7.50

Question 35

Round $12.51 to the nearest dollar.

Accepted Answer

$13

Answer

$12

Answer

$11

Answer

$12.50

Question 36

Which is greater: 0.63 or 0.603?

Accepted Answer

0.63

Answer

0.603

Answer

They are equal

Question 37

Which comparison is true?

Accepted Answer

0.52 > 0.5

Answer

0.7 < 0.68

Answer

0.405 > 0.45

Answer

0.90 < 0.9

Question 38

A video game costs $$19.75 and a controller costs $$ 24.20. What is the best estimate of the total cost?

Accepted Answer

About $44

Answer

About $40

Answer

About $45

Question 39

Compare the decimals: 3.08 ___ 3.8

Accepted Answer

<

Answer

=

Answer

>

Question 40

Which shows the numbers in order from least to greatest? 0.5, 0.45, 0.505, 0.54

Accepted Answer

0.45, 0.505, 0.5, 0.54

Answer

0.45, 0.5, 0.505, 0.54

Answer

0.5, 0.45, 0.505, 0.54

Answer

0.505, 0.45, 0.5, 0.54

Question 41

Round $38.50 to the nearest dollar.

Accepted Answer

$39

Answer

$38

Answer

$40

Answer

$37

Question 42

Which of the following is the product of 0.4 and 30?

Accepted Answer

12

Answer

1.2

Answer

3

Answer

120

Question 43

A snack costs $2.39. What is the total of 4 snacks, rounded to the nearest dollar?

Accepted Answer

$8

Answer

$9

Answer

$10

Answer

$12

Question 44

Which comparison is true?

Accepted Answer

7.1 = 7.10

Answer

2.35 < 2.305

Answer

5.007 > 5.07

Answer

0.99 > 1.00

Question 45

Decimal grid on the left has 73 of 100 squares shaded. Which decimal does it represent?

Accepted Answer

0.73

Answer

0.37

Answer

0.7

Answer

0.703

Question 46

Decimal grid on the right has 68 of 100 squares shaded. Which decimal does it represent?

Accepted Answer

0.68

Answer

0.86

Answer

0.6

Answer

0.608

Question 47

Which shows 0.73 compared to 0.68?

Accepted Answer

0.73 > 0.68

Answer

0.73 < 0.68

Answer

0.73 = 0.68

Question 48

A shirt is $$14.95 and a hat is $$ 8.25. About how much will both cost together?

Accepted Answer

About $25

Answer

About $22

Answer

About $23

Answer

About $24

Question 49

Which statement correctly describes the relationship between 0.4 and 0.04?

Accepted Answer

0.4 is 10 times 0.04

Answer

0.4 is 1/10 of 0.04

Answer

0.04 is 1/10 of 0.4

Answer

0.04 is 10 times 0.4

Question 50

Which number makes this statement true? 0.7 is 1/10 of ____.

Accepted Answer

7

Answer

0.07

Answer

0.70

Answer

0.007

Question 51

A number is 10 times as much as 0.83. What is the number?

Accepted Answer

8.3

Answer

0.083

Answer

0.83

Answer

83

Question 52

Which bar diagram best models: A game costs $$12.50. Mia has $$ 7.25 and receives $6.00 from her brother. Does she have enough to buy the game?

Accepted Answer

One bar labeled $$12.50; a second bar split into $$ 7.25 and $$6.00 showing a total compared to $$ 12.50

Answer

One single bar labeled $13.25 with a question mark

Answer

Two equal bars each labeled $12.50

Answer

A bar split into $$12.50 and $$ 6.00 compared to $7.25

Question 53

Brittany works 21.5 hours every week. If she earns $8.50 per hour, how much does she earn in one week?

Accepted Answer

$183.75

Answer

$187.50

Answer

$182.75

Answer

$185.60

Question 54

Which statement is true about place value?

Accepted Answer

The value of a digit in the tenths place is 10 times its value in the hundredths place.

Answer

The value of a digit in the hundredths place is 1/10 of its value in the tenths place.

Answer

Moving a digit one place to the right makes its value 10 times larger.

Answer

Moving a digit one place to the left makes its value 1/10 as large.

Questions 1-3: Decimal Operations and Estimation

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