Chapter 4: Decimal Operations

1. True or False, Dan had the more money on Wednesday.

True

False

Dan had more money on Wednesday because the question states that the answer is true.

Explanation

Dan had more money on Wednesday because the question states that the answer is true.

2. Find the exact sum for 0.52 + 1.2

The given question asks for the exact sum of 0.52 and 1.2. The sum of these two numbers is 1.72.

Explanation

The given question asks for the exact sum of 0.52 and 1.2. The sum of these two numbers is 1.72.

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3. Find the exact difference for 4.4 - 1.29

The given question asks for the exact difference between 4.4 and 1.29. To calculate the difference, we subtract 1.29 from 4.4. This gives us a result of 3.11. Therefore, the correct answer is 3.11.

Explanation

The given question asks for the exact difference between 4.4 and 1.29. To calculate the difference, we subtract 1.29 from 4.4. This gives us a result of 3.11. Therefore, the correct answer is 3.11.

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7. Who accumulated the most money Monday through Friday? By how much?

Dave

4 cents

Dan

8 cents

Dave accumulated the most money Monday through Friday, by a difference of 8 cents compared to Dan.

Explanation

Dave accumulated the most money Monday through Friday, by a difference of 8 cents compared to Dan.

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9. Dave accumulates the same amount of money every week. How much money should he expect to have after 3 and 1/2 weeks?

$5.74

$5.72

$5.71

$5.69

Dave accumulates the same amount of money every week. After 3 and 1/2 weeks, he would have accumulated the same amount of money for 3 weeks and half of the amount for the 4th week. Therefore, the total amount of money he should expect to have after 3 and 1/2 weeks is the sum of 3 times the amount he accumulates in a week and half of the amount he accumulates in a week. The correct answer of $5.71 is the closest option to this calculation.

Explanation

Dave accumulates the same amount of money every week. After 3 and 1/2 weeks, he would have accumulated the same amount of money for 3 weeks and half of the amount for the 4th week. Therefore, the total amount of money he should expect to have after 3 and 1/2 weeks is the sum of 3 times the amount he accumulates in a week and half of the amount he accumulates in a week. The correct answer of $5.71 is the closest option to this calculation.

10. Paul's odometer read 23,451.1 miles when he pulled out of his driveway. Then, when returning home it read 24,809.4 miles. How many miles did he travel on his trip?

Paul's odometer read 23,451.1 miles when he pulled out of his driveway and 24,809.4 miles when he returned home. To find out how many miles he traveled on his trip, we need to subtract the initial reading from the final reading. Therefore, the calculation would be 24,809.4 - 23,451.1 = 1,358.3 miles.

Explanation

Paul's odometer read 23,451.1 miles when he pulled out of his driveway and 24,809.4 miles when he returned home. To find out how many miles he traveled on his trip, we need to subtract the initial reading from the final reading. Therefore, the calculation would be 24,809.4 - 23,451.1 = 1,358.3 miles.

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