Decimal Measurements: Worded problems

Examples with solutions for Decimal Measurements: Worded problems

Exercise #1

Darrel exercises every day by walking 1000 meters and running 1 km.

How many meters does he cover each day?

Step-by-Step Solution

Let's solve the problem step-by-step:

Darrel walks a distance of 10001000 meters every day as part of his exercise.

Darrel also runs a distance of 11 kilometer daily. To find this distance in meters, we use the conversion factor:
1kilometer=1000meters 1\, \text{kilometer} = 1000\, \text{meters}

Thus, Darrel runs 10001000 meters.

To find the total distance Darrel covers each day, add the distance he walks to the distance he runs:

Total distance = Walking distance + Running distance

Total distance = 1000+10001000 + 1000

Total distance = 20002000 meters

Therefore, Darrel covers a total of 20002000 meters each day.

Answer

2000

Exercise #2

Nigel builds a 5 km long wall over a period of two days.

How many meters on average does he build each day?

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Convert the total length of the wall Nigel builds from kilometers to meters.
  • Step 2: Calculate the average number of meters built each day.

Now, let's work through each step:

Step 1: Nigel builds a wall that is 5 kilometers long. Since 1 km=1000 m1 \text{ km} = 1000 \text{ m}, we convert kilometers to meters:

5 km=5×1000 m=5000 m5 \text{ km} = 5 \times 1000 \text{ m} = 5000 \text{ m}

Step 2: Since the wall is built over 2 days, we divide the total length in meters by the number of days to find the average:

Average meters per day=5000 m2 days=2500 m/day\text{Average meters per day} = \frac{5000 \text{ m}}{2 \text{ days}} = 2500 \text{ m/day}

Therefore, on average, Nigel builds 2500 meters of the wall each day.

Thus, the correct answer is choice 3\boxed{3} with 2500 m per day.

Answer

2500

Exercise #3

Every day, Miguel travels 300 meters to get to his grandfather's house.

After that, he travels another 5 km to his workplace.

How many km does he travel from his house to work each day?

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Convert the distance traveled to the grandfather's house from meters to kilometers.
  • Step 2: Add the converted distance to the distance traveled from the grandfather's house to the workplace.
  • Step 3: Present the total distance in kilometers.

Now, let's work through each step:

Step 1: Miguel travels 300 meters to his grandfather's house. Since 1 kilometer equals 1000 meters, we convert 300 meters to kilometers as follows:

300 meters=3001000 kilometers=0.3 kilometers 300 \text{ meters} = \frac{300}{1000} \text{ kilometers} = 0.3 \text{ kilometers}

Step 2: Miguel then travels 5 kilometers from his grandfather's house to his workplace. To find the total distance traveled, we add these two distances:

0.3 kilometers+5 kilometers=5.3 kilometers 0.3 \text{ kilometers} + 5 \text{ kilometers} = 5.3 \text{ kilometers}

Step 3: Therefore, the total distance Miguel travels from his house to his workplace each day is 5.3 kilometers 5.3 \text{ kilometers} .

Answer

5.3

Exercise #4

Every day, Miguel travels 300 meters to get to his grandfather's house.

After that, he travels another 5 km to his workplace.

How many meters does he travel from his house to work each day?

Step-by-Step Solution

To calculate the total distance Miguel travels from his house to work each day, we need to consider both segments of his journey:

  • First, the distance from his house to his grandfather's house is directly given as 300 meters.
  • Next, the distance from his grandfather's house to his workplace is given as 5 kilometers.

We need to convert the 5 kilometers into meters because we want the entire distance in meters. Recall that 1 kilometer=1000 meters1 \text{ kilometer} = 1000 \text{ meters}.

So, converting 5 kilometers to meters, we have:

5 km=5×1000 meters=5000 meters 5 \text{ km} = 5 \times 1000 \text{ meters} = 5000 \text{ meters}

Now, we add the two segments of his journey:

  • Distance from the house to grandfather's house: 300 meters
  • Distance from grandfather's house to workplace: 5000 meters

The total distance from his house to work is:

300 meters+5000 meters=5300 meters 300 \text{ meters} + 5000 \text{ meters} = 5300 \text{ meters}

Therefore, Miguel travels a total of 5300 meters each day from his house to his workplace.

Given the choices, the correct answer is choice : 53005300.

Answer

5300

Exercise #5

Darrel exercises daily by walking 1000 meters and running 1 km.

How many meters does he travel each day?

Step-by-Step Solution

Let's proceed with the solution:

Step 1: Convert running distance from kilometers to meters.
Since 1 km=1000 meters1 \text{ km} = 1000 \text{ meters}, the running distance is 1×1000=10001 \times 1000 = 1000 meters.

Step 2: Add the walking distance and running distance to find the total distance.
Total distance = Walking distance + Running distance.

Walking distance: 10001000 meters.
Running distance: 10001000 meters.

Therefore, the total distance traveled each day is:

1000 meters+1000 meters=2000 meters1000 \text{ meters} + 1000 \text{ meters} = 2000 \text{ meters}.

Thus, Darrel travels 20002000 meters each day.

Please note, the original question presents these as integer values, and there might be a mismatch due to a contextual issue. However, based solely on the given data, the computed total is 20002000 meters.

Answer

1.5