Decimal Measurements - Examples, Exercises and Solutions

Decimal Measures

To equalize decimal measures, we will proceed according to the following steps:
First step: Identify the larger measure.
Second step: Convert the number with the smaller unit of measure to the larger unit of measure.
Third step: Compare the numbers that now have the same unit of measure

Let's remember the conversion relationship:
11 mm = 1010  cm
100100  cm = 11 meter
11 m = 10001000 mm = 100100 cm

Suggested Topics to Practice in Advance

  1. Multiplication and Division of Decimal Numbers by 10, 100, etc.
  2. Division of Decimal Numbers
  3. Multiplication of Decimal Numbers

Practice Decimal Measurements

Examples with solutions for Decimal Measurements

Exercise #1

Which is larger?

0.3 cm ⬜ 3 mm

Video Solution

Step-by-Step Solution

To solve this problem, we'll focus on converting the measurements to the same unit:

  • Step 1: Convert 0.30.3 cm to millimeters. Since 11 cm \equals 1010 mm, we have:
  • 0.3cm=0.3×10mm=3mm0.3 \, \text{cm} = 0.3 \times 10 \, \text{mm} = 3 \, \text{mm}.
  • Step 2: Compare the converted measurement (33 mm) with the given 33 mm.

We find that both measurements are equal.

Therefore, 0.30.3 cm is exactly equal to 33 mm.

Conclusion: Hence, the correct choice is = = , indicating both values are equal.

Answer

= =

Exercise #2

Which is larger?

0.6 mts ⬜ 600 cm

Video Solution

Step-by-Step Solution

To solve this problem, we'll proceed with the following steps:

  • Step 1: Convert 0.6 meters into centimeters.
  • Step 2: Use the conversion factor: 11 meter = 100100 centimeters.
  • Step 3: Perform the conversion and compare the results.

Let's work through these steps:

Step 1: The problem gives us 0.6 meters. We need to convert this to centimeters.
Step 2: Using the conversion formula, 11 meter equals 100100 centimeters.
Step 3: To convert 0.6 meters to centimeters, multiply by the conversion factor:

0.6meters×100cm/meter=60cm0.6 \, \text{meters} \times 100 \, \text{cm/meter} = 60 \, \text{cm}

Now, we compare 60 cm (from the conversion) with 600 cm:

Since 60cm<600cm60 \, \text{cm} < 600 \, \text{cm}, we conclude:

0.6mts<600cm0.6 \, \text{mts} < 600 \, \text{cm}

Thus, the correct answer to the problem is:

< <

Answer

<

Exercise #3

Which is larger?

4 mts. ⬜ 200 cm

Video Solution

Step-by-Step Solution

To solve this problem, we need to compare 4 meters with 200 centimeters. We can simplify this comparison by converting 4 meters into centimeters. This involves the following steps:

  • Step 1: Convert meters to centimeters using the conversion factor: 1 meter = 100 centimeters.
  • Step 2: Calculate the number of centimeters in 4 meters.
        4 meters=4×100 centimeters=400 centimeters 4 \text{ meters} = 4 \times 100 \text{ centimeters} = 400 \text{ centimeters}
  • Step 3: Compare the values:
        400 centimeters versus 200 centimeters.

By comparing 400 centimeters to 200 centimeters, it is clear that 400 centimeters is greater than 200 centimeters. Hence, 4 meters is greater than 200 centimeters.

Therefore, the solution to the problem is > > .

Answer

>

Exercise #4

Which is larger?

50 cm ⬜ 5 meters

Video Solution

Step-by-Step Solution

To solve the problem of determining which is larger between 50 cm and 5 m, we need to compare the two measurements in the same units. We'll convert 5 meters into centimeters for a direct comparison.

  • Step 1: Convert 5 meters into centimeters. Since 1 meter equals 100 centimeters, we multiply 5 meters by 100 to find its equivalent in centimeters:
  • 5 m ×\times 100 cm/m = 500 cm

Step 2: Compare the two values in centimeters:

  • 50 cm and 500 cm

Clearly, 50 cm is less than 500 cm.

Therefore, the correct inequality is 50cm<5m 50 \, \text{cm} < 5 \, \text{m} .

This corresponds to choice < < which is choice number 2.

Answer

<

Exercise #5

Which is larger?

300 cm ⬜ 3 meters

Video Solution

Step-by-Step Solution

To solve this problem, let's follow our planned steps:

  • Step 1: Convert the measurement of 3 meters into centimeters.
  • Step 2: Compare the two measurements.

Now, we'll go through each step in detail:

Step 1: Convert 3 meters to centimeters. Using the conversion factor: 1 meter =100 = 100 centimeters.

Thus, 3 3 meters =3×100 = 3 \times 100 centimeters =300 = 300 centimeters.

Step 2: Compare the values: 300 centimeters (initial given) and 300 centimeters (converted from 3 meters).

Since both measurements are equal (300 cm), we conclude they are the same size.

Therefore, the correct comparison is = = .

Answer

= =

Exercise #6

Which is larger?

40 meters ⬜ 0.04 .| km

Video Solution

Step-by-Step Solution

To solve this problem, we need to compare two distances: 40 meters and 0.04 kilometers.

Let's follow these steps to reach the solution:

  • Step 1: Convert 0.04 kilometers to meters.
  • Step 2: Compare the converted distance with 40 meters.

Now, we'll work each step in detail:

Step 1: Convert 0.04 kilometers to meters.

The conversion factor is 1 km=1000 meters1 \text{ km} = 1000 \text{ meters}.

Thus, 0.04 km×1000=40 meters0.04 \text{ km} \times 1000 = 40 \text{ meters}.

Step 2: Compare the two distances:

We have both distances as 40 meters now. Therefore, 40 meters is equal to 40 meters.

The solution is that the two distances are equal, so the comparison operator is:

= =

Answer

= =

Exercise #7

Which is larger?

5.34 cm ⬜ 53 mm

Video Solution

Step-by-Step Solution

To solve this problem, let's convert both measurements to the same unit for a direct comparison:

  • Step 1: Convert 5.34 cm to millimeters.
  • Step 2: Use the conversion factor 1 cm=10 mm1 \text{ cm} = 10 \text{ mm}.
  • Step 3: Calculate 5.34 cm×10=53.4 mm5.34 \text{ cm} \times 10 = 53.4 \text{ mm}.

Now, compare this result with 53 mm:

5.34 cm=53.4 mm \text{5.34 cm} = 53.4 \text{ mm} > 53 mm \text{53 mm} .

Therefore, 5.34 cm is greater than 53 mm, and the correct symbol to use is >\gt.

Thus, the solution to the problem is >\gt.

Answer

>

Exercise #8

Which is larger?

5 meters ⬜ 0.1 km

Video Solution

Step-by-Step Solution

To determine which measurement is larger, we need to convert the units so they are comparable.

Step 1: Convert kilometers to meters
We know that 1 kilometer is equivalent to 1000 meters. Hence, to convert 0.1 kilometers to meters, we perform the following calculation:
0.1 km×1000 meters/km=100 meters 0.1 \text{ km} \times 1000 \text{ meters/km} = 100 \text{ meters}

Step 2: Compare the measurements
We are now comparing 5 meters with 100 meters, as both are in the same unit of measurement.

  • 5 meters
  • 100 meters

Since 5 meters < < 100 meters, the comparison shows that the measurement of 5 meters is smaller than 0.1 kilometers.

Thus, the correct answer is: < < .

Answer

<

Exercise #9

Which is larger?

40 mm ⬜ 5 cm

Video Solution

Step-by-Step Solution

To determine which measurement is larger, we'll convert the measurement in centimeters to millimeters to make a direct comparison:

  • Step 1: Convert 5 centimeters to millimeters.

Using the conversion ratio, 1 cm = 10 mm, we find:

5cm×10mmcm=50mm 5 \, \text{cm} \times 10 \, \frac{\text{mm}}{\text{cm}} = 50 \, \text{mm}

  • Step 2: Compare the two measurements.

Now we compare 40 mm and 50 mm:

40mm 40 \, \text{mm} is less than 50mm 50 \, \text{mm} .

Therefore, 40 mm is less than 5 cm when both are expressed in millimeters.

So the correct answer is:

<

Answer

<

Exercise #10

Which is larger?

45.6 mm ⬜ 2.3 cm

Video Solution

Step-by-Step Solution

To solve this problem, we will compare the sizes of 45.6 mm and 2.3 cm in the same units:

  • Convert 2.3 cm to millimeters using the conversion factor: 1 cm=10 mm1 \text{ cm} = 10 \text{ mm}.

Let's calculate the conversion:

2.3 cm×10mmcm=23 mm2.3 \text{ cm} \times 10 \frac{\text{mm}}{\text{cm}} = 23 \text{ mm}

Now, we have two measurements to compare:

  • 45.6 mm
  • 23 mm

Since 45.6 mm is greater than 23 mm, we have:

45.6 mm>2.3 cm45.6 \text{ mm} > 2.3 \text{ cm}

Therefore, the solution to the problem is > .

Answer

>

Exercise #11

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 #12

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 #13

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 #14

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 #15

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

Topics learned in later sections

  1. Repeating Decimal
  2. Decimal Fractions