# Math 090 Decimals Quiz

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| By Mvemjsunp
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Mvemjsunp
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Quizzes Created: 2 | Total Attempts: 823
Questions: 9 | Attempts: 383

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This is a quiz on decimals

• 1.

### What is 2.5 X .88?

• A.

2.2

• B.

2.67

• C.

None of these

A. 2.2
Explanation
The correct answer is 2.2 because when you multiply 2.5 by 0.88, you get 2.2.

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• 2.

### What is 5.25 divided by .05?

• A.

10.5

• B.

105

• C.

None of these

B. 105
Explanation
When dividing 5.25 by 0.05, we can think of it as moving the decimal point two places to the right in both numbers. This gives us 525 divided by 5, which equals 105. Therefore, the correct answer is 105.

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• 3.

### Convert 5/8 into a decimal.

• A.

.685

• B.

5.8

• C.

None of these

C. None of these
• 4.

### What is 13 - 6.87?

• A.

0.613

• B.

613

• C.

None of these

C. None of these
• 5.

### Convert 5 3/5 into a decimal.

• A.

0.6

• B.

5.6

• C.

None of these

B. 5.6
Explanation
To convert a mixed number into a decimal, we first multiply the whole number by the denominator of the fraction and then add the numerator. In this case, we multiply 5 by 5 (denominator of 3/5) and get 25. Then we add the numerator 3 to get 28. Finally, we divide 28 by the denominator 5 to get the decimal form, which is 5.6.

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• 6.

### To add or subtract decimals, you must line up the decimal points.

• A.

True

• B.

False

• C.

Depends

A. True
Explanation
When adding or subtracting decimals, it is necessary to line up the decimal points in order to correctly calculate the result. This is because the decimal point represents the position of the fractional part of the number. By aligning the decimal points, we ensure that the corresponding digits in each decimal place are being added or subtracted accurately.

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• 7.

### Multiply (1.3)(2.4)(6.8)

• A.

21.216

• B.

212.16

• C.

None of these

A. 21.216
Explanation
The given question asks to multiply three numbers: 1.3, 2.4, and 6.8. Multiplying these numbers together gives the result of 21.216.

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• 8.

### 100 - .999

• A.

1

• B.

99

• C.

None of these

C. None of these
Explanation
The expression 100 - .999 evaluates to 99.001, which is not one of the given answer choices. Therefore, the correct answer is "none of these".

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• 9.

### Round 34.657 to the nearest tenths place.

• A.

34.7

• B.

34.66

• C.

None of these

A. 34.7
Explanation
When rounding a number to the nearest tenth place, we look at the digit in the hundredth place. If it is 5 or greater, we round up. If it is less than 5, we round down. In this case, the digit in the hundredth place is 6, which is greater than 5. Therefore, we round up the digit in the tenths place, which is 4, to the next higher number, which is 7. So the correct answer is 34.7.

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• Current Version
• Mar 21, 2023
Quiz Edited by
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• Feb 23, 2009
Quiz Created by
Mvemjsunp

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