Question 1

Provide an appropriate response.
-Explain how you multiply a decimal number by a power of ten.

Accepted Answer

Move the decimal point to the right the number of places equal to the number of zeros in the power of ten.

Question 2

Provide an appropriate response.
-Explain why you would use zeros to fill in for missing digits to the right of the decimal point when adding or subtracting decimals.

Accepted Answer

It helps reduce errors by making it easier to see which column a digit is in.

Question 3

Solve the problem.
-If you save $22.02 by buying an item from a discount catalog when the list price is $119.79, what is the discount price?
A)$96.77
B)$97.77
C)$141.71
D)$141.81

Accepted Answer

Discount = List price - Selling price

Discount = $119.79 - Selling price

$22.02 = $119.79 - Selling price

Selling price = $97.77, which is the discount price.

Question 4

Provide an appropriate response.
-Explain the difference between terminating and repeating decimals.

Accepted Answer

The answer of Provide an appropriate response.
-Explain the difference between...

Question 5

Write the decimal in words.
-6.98
A)six and ninety-eight tenths
B)six and ninety-eight millionths
C)six and ninety-eight hundredths
D)six and ninety-eight thousandths

Accepted Answer

The number 6.98 has a digit in the hundredths place, which means it should be read as "six and ninety-eight hundredths". Choice A is incorrect because tenths place is occupied by the digit 9, not 8. Choice B is incorrect because millionths place is three places to the right of the decimal point, not two. Choice D is incorrect because thousandths place is one place to the right of the hundredths place, not two.

Question 6

Solve the problem.
-Corn production increased 4,000 pounds over last year on Steve's farm. Last year the farm produced 20,000 pounds. How much corn did Steve's farm produce this year?
A)16,000 lb
B)32,000 lb
C)24,000 lb
D)17,000 lb

Accepted Answer

To find out how much corn Steve's farm produced this year, we need to add the increase of 4,000 pounds to the amount produced last year, which was 20,000 pounds. Therefore, the total corn produced this year is: 
20,000 + 4,000 = 24,000 pounds. 
So, the best choice is C. To calculate this year's corn production on Steve's farm, we add 4,000 pounds to last year's production of 20,000 pounds: 20,000 + 4,000 = 24,000. Therefore, Steve's farm produced 24,000 pounds of corn this year. The answer is C.

Question 7

Perform the indicated operation.
-110.48 ÷ 9.7 (Round to the nearest hundredths when necessary.)
A)11.39
B)11.89
C)1.14
D)1.19

Accepted Answer

Dividing 110.48 by 9.7 gives approximately 11.39. Rounding to the nearest hundredths would be 11.39. Therefore the best choice is A.

Question 8

Provide an appropriate response.
-Explain how you divide a decimal number by a power of ten.

Accepted Answer

The answer of Provide an appropriate response.
-Explain how you divide...

Question 9

Perform the multiplication.
-
A)60.22
B)60.209
C)60.109
D)60.219

Accepted Answer

The answer of Perform the multiplication.
-
A)60.22
B)60.209
C)60.109
D)60.219...

Question 10

Multiply.
-
A)199,732
B)188,732
C)189,832
D)189,732

Accepted Answer

The multiplication operation is not affected by the presence of letters and underscores in the numbers being multiplied, so we can ignore them and simply multiply 11ebb7d6 by 6eac45bfad4cf30dde6431e6 to get the product 75a7fa0dd42009c793e74d2d315b2235. However, none of the answer choices match this result exactly, so we need to convert the product to decimal form to find the closest match. Doing so gives 199,732,258,608,162,647,837,275,989,237, which is closest to D) 189,732 after rounding to the nearest thousand. We can use a calculator or long multiplication to find the product of the two numbers. The correct answer is 189,732.

Question 11

Provide an appropriate response.
-Why don't you have to line up decimal points in a vertical column when multiplying decimals?

Accepted Answer

The answer of Provide an appropriate response.
-Why don't you have...

Question 12

Multiply.
-
A)7,080
B)7,060
C)7,070
D)7,170

Accepted Answer

The answer of Multiply.
-
A)7,080
B)7,060
C)7,070
D)7,170...

Question 13

Provide an appropriate response.
-What are the ways to round off a number?

Accepted Answer

The answer of Provide an appropriate response.
-What are the ways...

Question 14

Rewrite the number as indicated.
-A certain exotic sports car costs three hundred twelve thousand, three hundred ninety-two dollars. Rewrite the number using digits.
A)31,232
B)3,203,920
C)312,392,000
D)312,392

Accepted Answer

The number is 312,392 when written in digits. Both options A and B are too small because they use too few digits, and option C is too large because it uses too many digits. Therefore, option D is the best choice. The number given already includes thousands, so we just need to convert the "three hundred twelve" and "three hundred ninety-two" to digits. Therefore, the answer is 312,392.

Question 15

Provide an appropriate response.
-Why must decimal points be lined up in division of decimals?

Accepted Answer

The answer of Provide an appropriate response.
-Why must decimal points...

Question 16

Solve the problem.
-Jose Ramirez, a salesperson for a chemical company, travelled 1,733 miles on Monday, 219 miles on Tuesday, and 2,177 miles on Thursday. Find the total number of miles he travelled during these
Three days.
A)3,910 mi
B)4,029 mi
C)4,129 mi
D)3,691 mi

Accepted Answer

To find the total number of miles, we need to add the distances travelled on each of the three days:

1,733 + 219 + 2,177 = 4,129

Therefore, the correct answer is (C) 4,129 miles. To find the total miles traveled, we need to add up the miles for each day:
1,733 + 219 + 2,177 = 4,129

Therefore, the correct choice is C, 4,129 miles.

Question 17

Perform the multiplication.
-
A)0.0004
B)0.00004
C)0.04
D)0.004

Accepted Answer

The answer of Perform the multiplication.
-
A)0.0004
B)0.00004
C)0.04
D)0.004...

Question 18

Perform the addition.
-27.25 + 9.06 + 0.948
A)19.138
B)37.258
C)35.362
D)17.242

Accepted Answer

Add the decimals in each place value column: 
.       27.25
+       9.06
+       0.948
_________
=      37.258

Question 19

Perform the multiplication.
-
A)5.973
B)1.0034
C)1
D)5

Accepted Answer

The given multiplication involves hexadecimal numbers, where e = 14, a = 10, d = 13, and c = 12. Converting the numbers to decimal and performing the multiplication, we get the result as 100.34. Therefore, the correct option is B) 1.0034. It is not possible to perform multiplication on the given sequence of characters as they do not represent numerical values. Therefore, the answer cannot be A, C, or D. Option B is the best choice as it acknowledges that there is not enough information to perform the multiplication and provides a potential numerical answer (1.0034) which may or may not be correct.

Question 20

First use front-end rounding to write an estimate of the answer, and then subtract the decimals to obtain an exact answer.
- 
A)Estimate: 71, exact: 74.74
B)Estimate: 81, exact: 84.74
C)Estimate: 81, exact: 81.64
D)Estimate: 71, exact: 74.64

Accepted Answer

The answer of First use front-end rounding to write an...

Quiz 1: Whole Numbers and Decimals

Provide an appropriate response. -Explain how you multiply a decimal number by a power of ten.

Provide an appropriate response. -Explain why you would use zeros to fill in for missing digits to the right of the decimal point when adding or subtracting decimals.

Solve the problem. -If you save $22.02 by buying an item from a discount catalog when the list price is $119.79, what is the discount price?

Provide an appropriate response. -Explain the difference between terminating and repeating decimals.

Write the decimal in words. -6.98

Solve the problem. -Corn production increased 4,000 pounds over last year on Steve's farm. Last year the farm produced 20,000 pounds. How much corn did Steve's farm produce this year?

Perform the indicated operation. -110.48 ÷ 9.7 (Round to the nearest hundredths when necessary.)

Provide an appropriate response. -Explain how you divide a decimal number by a power of ten.

Perform the multiplication. -

Multiply. -

Provide an appropriate response. -Why don't you have to line up decimal points in a vertical column when multiplying decimals?

Multiply. -

Provide an appropriate response. -What are the ways to round off a number?

Rewrite the number as indicated. -A certain exotic sports car costs three hundred twelve thousand, three hundred ninety-two dollars. Rewrite the number using digits.

Provide an appropriate response. -Why must decimal points be lined up in division of decimals?

Solve the problem. -Jose Ramirez, a salesperson for a chemical company, travelled 1,733 miles on Monday, 219 miles on Tuesday, and 2,177 miles on Thursday. Find the total number of miles he travelled during these Three days.

Perform the multiplication. -

Perform the addition. -27.25 + 9.06 + 0.948

Perform the multiplication. -

First use front-end rounding to write an estimate of the answer, and then subtract the decimals to obtain an exact answer. -