# Multiplying And Dividing Using Significant Figures

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| By Jasondickerson2
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Jasondickerson2
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Quizzes Created: 2 | Total Attempts: 1,149
Questions: 10 | Attempts: 994

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• 1.

### 7.6 x 21.9 = ?

• A.

166.4

• B.

166

• C.

170

• D.

160

C. 170
Explanation
The product of 7.6 and 21.9 is 166.44, which is closest to 170.

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• 2.

### 38 / 7 = ?

• A.

5.429

• B.

5.43

• C.

5.4

• D.

5

D. 5
Explanation
The correct answer is 5 because when you divide 38 by 7, the quotient is 5 with a remainder of 3. Since the question asks for the quotient, the answer is 5.

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• 3.

### 2.15 x 3.1 x 100 = ?

• A.

7

• B.

680.5

• C.

670.5

• D.

666.5

D. 666.5
Explanation
The given expression can be simplified by multiplying the numbers together. 2.15 multiplied by 3.1 gives us 6.665, and when we multiply this by 100, we get 666.5. Rounding this to the nearest whole number gives us 666.5.

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• 4.

### 5.0009 x 0.06 = ?

• A.

0.30005

• B.

0.3001

• C.

0.30

• D.

0.3

D. 0.3
Explanation
The product of 5.0009 and 0.06 is 0.300054, which can be approximated to 0.3.

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• 5.

### 500 009 / 17.000 = ?

• A.

29412

• B.

29410

• C.

29400

• D.

29000

A. 29412
Explanation
To find the result of the division, we divide 500,009 by 17,000. The quotient is 29 and the remainder is 4. Since the remainder is less than half of the divisor (8,500), we round down the quotient to 29. Therefore, the correct answer is 29,412.

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• 6.

### 39.3 x 0.804 = ?

• A.

31.6

• B.

31.5

• C.

31.597

• D.

32.0

A. 31.6
Explanation
The given question asks for the product of 39.3 and 0.804. To find the answer, we multiply these two numbers together. The result is 31.5972, but since the question asks for the answer rounded to one decimal place, we round the answer to the nearest tenth, which gives us 31.6.

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• 7.

### 45.20 x 0.0071 =45.20 x 045.20 x 0.0071 = ?

• A.

0.321

• B.

0.32

• C.

0.3209

• D.

0.3

B. 0.32
Explanation
The given equation can be simplified by multiplying 45.20 and 0.0071 first, which equals 0.32152. Then, multiplying this result by 045.20 will give the final answer. However, since 045.20 is the same as 45.20, the equation can be further simplified to 45.20 multiplied by 0.32152. Evaluating this multiplication gives the answer of 0.32.

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• 8.

### 497.7 / 3.0 =  ?

• A.

165.9

• B.

165

• C.

166

• D.

170

A. 165.9
Explanation
This is calculated by dividing the numbers as you would with whole numbers, aligning the decimal points appropriately. The result, 165.9, is obtained by straightforward division, ensuring the quotient retains the decimal place accuracy from the original numbers. Thus, 497.7 divided by 3.0 equals 165.9.

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• 9.

### 43,000 x 0.00546 = ?

• A.

234.78

• B.

234.9

• C.

235

• D.

230

D. 230
Explanation
The given question requires multiplying 43,000 by 0.00546. When this calculation is performed, the result is 234.78. However, since the answer choices are rounded to the nearest whole number, the correct answer is 230, which is the closest whole number to 234.78.

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• 10.

### 315 / 10 = ?

• A.

31.5

• B.

31

• C.

32

• D.

30

A. 31.5
Explanation
The division of 315 by 10 equals 31.5.

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• Current Version
• Jul 11, 2024
Quiz Edited by
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• Apr 26, 2017
Quiz Created by
Jasondickerson2

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