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Question : Follow the principles of estimation to find an approximate value. : 2151837

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Follow the principles of estimation to find an approximate value.

1) Estimate by rounding to the nearest hundred.

629 × 549

A) 1100

B) 345,300

C) 300,000

D) 345,321

2) Estimate by rounding to the nearest thousand.

48,781 × 8774

A) 428,004,494

B) 439,029,000

C) 441,000,000

D) 429,926,000

3) Estimate by rounding to the nearest hundred.

982,764 × 645

A) 589,658,400

B) 633,906,000

C) 633,882,780

D) 589,680,000

4) Estimate by rounding to the nearest ten.

15 + 55 + 86 + 73 + 86

A) 315

B) 300

C) 330

D) 320

5) Estimate by rounding to the nearest hundred.

315 + 914 + 254 + 539 + 137

A) 2100

B) 2159

C) 2160

D) 2200

6) Estimate by rounding to the nearest ten for the divisor and the nearest hundred thousand for the dividend.

(327,070) divided by 58

A) 5172.41379

B) 5451.16667

C) 5639.13793

D) 5000

7) Estimate by rounding to the nearest ten for the divisor and the nearest million for the dividend.

(2,837,524) divided by 56

A) 50,670.0714

B) 47,292.0667

C) 53,571.4286

D) 50,000

8) Estimate by rounding to the nearest thousandth for the numerator and the nearest hundredth for the denominator.

(0.002317/0.0367)

A) 0.05

B) 15.8394476

C) 0.06313351

D) 20

9) Estimate by rounding to the nearest tenth for the numerator and the nearest thousandth for the denominator.

(0.2526/0.00285)

A) 0.01128266

B) 0.01

C) 100

D) 88.6315789

10) Round the percent to the nearest ten and dollars to the nearest ten thousand.

Find 75% of $44,815.59.

A) $33,611.69

B) $320,000,000.00

C) $32,000.00

D) $3,200,000.00

11) Round the percent to the nearest one and dollars to the nearest ten thousand.

Find 4.2% of $43,665.24.

A) $1833.94

B) $16,000,000.00

C) $1600.00

D) $160,000.00

Solve.

12) The Gray family paid 24% of the purchase price of a $223,000 home as a down payment. Determine the amount of the down payment.

A) $535

B) $53,520

C) $9292

D) $5352

13) 25% of the lawyers in a firm are male. If there are 456 lawyers altogether, how many lawyers are male?

A) 5 lawyers

B) 1824 lawyers

C) 114 lawyers

D) 342 lawyers

Solve. If necessary, round percents to the nearest whole.

14) Last year, Mia bought a share of stock for $44.20. She was paid a dividend of $6.63. Determine what percent of the stock price is the dividend.

A) 1.5%

B) 6.7%

C) 85%

D) 15%

15) In a recent survey of 900 people, 18 said that their favorite color of car was blue. What percent of the people surveyed liked blue cars?

A) 2%

B) 51%

C) 50%

D) 3%

Determine an estimate of the exact answer. Use estimation by rounding.

16) Andy wants to buy a refrigerator for $899, a stove for $459, and a dishwasher for $249. Round each cost to the nearest hundred to estimate the total cost.

A) $1500

B) $1700

C) $1400

D) $1600

17) The Pan family took a trip and traveled 54, 165, 349, 439, 598, and 260 miles on 6 consecutive days. Round each distance to the nearest hundred to estimate the distance they traveled.

A) 2000 miles

B) 2100 miles

C) 1900 miles

D) 1800 miles

18) Linda scored 92, 65, 80, 88, 84, and 100 on her calculus tests. Round each score to the nearest ten to estimate her total score.

A) 520

B) 500

C) 510

D) 490

19) Estimate the floor area of a classroom that measures 394 feet long and 222 feet wide by rounding each measurement to the nearest ten.

A) 87,468 square feet

B) 1010 square feet

C) 1.77 square feet

D) 85,800 square feet

20) Jeremy drove for 143.7 miles and used 16.5 gallons of gas. Estimate the number of miles his car gets per gallon by rounding both the number of gallons and the number of miles to the nearest ten.

A) 8 mpg

B) 7 mpg

C) 10 mpg

D) 0.14 mpg

21) A typical customer at Heather's Hairstyles spends approximately $23.21 for a haircut. The salon has 11 hairstylists, and each hairstylists handles 3 customers per hour. Estimate the amount of money the salon receives in one hour. (Round the number of hairstylists to the nearest ten and the cost for a haircut to the nearest dollar.)

A) $690

B) $0.013

C) $765.93

D) $76.67

22) Johnston Community Hospital estimates that 21.3% of all operations in hospitals are hip replacements. If 3,928,995 operations were performed last year, estimate the number of hip replacement operations. (Round the percent to the nearest one and the number of operations to the nearest million)

A) 825,088.95

B) 836,875.935

C) 83,687,593.5

D) 840,000