Weight Units - Examples, Exercises and Solutions

Weight units allow us to quantify weight.

Units of weight to know:

A1 - Weight units

One gram is equivalent to 1000 1000 milligrams.

One kilogram is equivalent to 1000 1000 grams.

One ton is equivalent to 1000 1000 kilograms.

Suggested Topics to Practice in Advance

  1. Units of measurement for 11 and 12 year olds
  2. Surface Area Units or Area Measurements

Practice Weight Units

Examples with solutions for Weight Units

Exercise #1

8.6kg=?gr 8.6kg=?gr

Video Solution

Step-by-Step Solution

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

  • Step 1: Identify the given information and conversion factor
  • Step 2: Apply the conversion factor to obtain the result in grams

Let's work through these steps:
Step 1: We have 8.6kg 8.6 \, \text{kg} to convert to grams. Recall that 1kg 1 \, \text{kg} equals 1000grams 1000 \, \text{grams} .
Step 2: Multiply the given kilograms by the conversion factor to convert to grams:
8.6kg×1000grams/kg=8600grams 8.6 \, \text{kg} \times 1000 \, \text{grams/kg} = 8600 \, \text{grams}

Therefore, the solution to the problem is 8600grams 8600 \, \text{grams} .

Answer

8600 8600

Exercise #2

7kg=?gr 7kg=?gr

Video Solution

Step-by-Step Solution

To solve this problem of converting kilograms to grams, we will follow these steps:

  • Step 1: Identify the given weight in kilograms.
  • Step 2: Use the conversion factor 1 kg=1000 g 1 \text{ kg} = 1000 \text{ g} .
  • Step 3: Perform the necessary multiplication.

Let's go through these steps in detail:
Step 1: We have been given a weight of 7 7 kilograms.
Step 2: Recall that 1 kilogram=1000 grams 1 \text{ kilogram} = 1000 \text{ grams} .
Step 3: Multiply the number of kilograms by the conversion factor: 7 kg×1000 g/kg=7000 g 7 \text{ kg} \times 1000 \text{ g/kg} = 7000 \text{ g} This calculation confirms that 7 7 kilograms is equivalent to 7000 7000 grams.

Therefore, the solution to the problem is 7000 grams 7000 \text{ grams} .

Answer

7000 7000

Exercise #3

7.8T=?kg 7.8T=?kg

Video Solution

Step-by-Step Solution

The letter T indicates a metric tonne,

One tonne is equivalent to one thousand kilograms,

Therefore, in 7.8 tons there are

1000*7.8 = 7800 kg

Answer

7800 7800

Exercise #4

3.21kg=?gr 3.21kg=?gr

Video Solution

Step-by-Step Solution

To solve this problem, we will convert the weight from kilograms to grams.

We know that 1kg=1,000g1\, \text{kg} = 1,000\, \text{g}. Therefore, to convert the weight from kilograms to grams, we multiply the weight in kilograms by 1,000.

With the given weight 3.21kg3.21\, \text{kg}, we perform the calculation as follows:

  • Multiply 3.213.21 by 1,0001,000:

3.21×1,000=3,210 3.21 \times 1,000 = 3,210

After performing this calculation, we find that 3.21kg3.21 \, \text{kg} is equivalent to 3,210g3,210\, \text{g}.

Therefore, the solution to the problem is 3,2103,210.

Comparing this result with the given multiple choice answers, the correct choice is option (3): 3,2103,210.

Answer

3,210 3,210

Exercise #5

xm=?km x_m=?km

Video Solution

Step-by-Step Solution

In one kilometer there are 1000 meters,

therefore one meter is one-thousandth of a kilometer.

Answer

x1000 \frac{x}{1000}

Exercise #6

555×200kg=?T \frac{55}{5}\times200\operatorname{kg}=?T

Video Solution

Step-by-Step Solution

First, let's simplify the fraction:

555=11 \frac{55}{5}=11

This leaves us with:

11×200kg 11\times200kg

Now, let's perform the calculation, giving us:

2200kg 2200kg

Note that we need the answer in tons:

T=1000kg T=1000kg

2200kg1000=2.2T \frac{2200kg}{1000}=2.2T

Answer

2.2

Exercise #7

721×100gr=?kg \frac{7}{21}\times100gr=?kg

Video Solution

Step-by-Step Solution

To solve this problem, we follow these steps:

  • Step 1: Simplify the fraction 721\frac{7}{21}.
  • Step 2: Multiply the simplified fraction by 100 grams.
  • Step 3: Convert the resulting grams to kilograms.

Let's work through each step:

Step 1: Simplify 721\frac{7}{21}:
Both 7 and 21 can be divided by their greatest common divisor, which is 7. Simplifying gives us:

721=7÷721÷7=13\frac{7}{21} = \frac{7 \div 7}{21 \div 7} = \frac{1}{3}.

Step 2: Calculate 13×100\frac{1}{3} \times 100 grams:
Multiply to find the weight in grams:

13×100=100333.33\frac{1}{3} \times 100 = \frac{100}{3} \approx 33.33 grams.

Step 3: Convert grams to kilograms:
To convert grams to kilograms, divide by 1000:

33.331000=0.03333...\frac{33.33}{1000} = 0.03333... kilograms.
This is expressed as a fraction equivalent to:

130\frac{1}{30} kilograms (after realizing rounding applies to a precise fractional representation).

Thus, the correct answer is 130 \frac{1}{30} kilograms.

Therefore, the solution to the problem is 130\frac{1}{30} kg.

Answer

130 \frac{1}{30}

Exercise #8

x2kg=?gr x^2kg=?gr

Video Solution

Step-by-Step Solution

To convert x2 x^2 kilograms to grams, follow these steps:

  • Step 1: Start from the given expression in kilograms, which is x2 kg x^2 \text{ kg} .
  • Step 2: Use the conversion factor: 1 kg=1000 gr 1 \text{ kg} = 1000 \text{ gr} .
  • Step 3: Multiply the given x2 x^2 by 1000 to convert it into grams.

Performing the multiplication, we have:
x2×1000=1000x2 x^2 \times 1000 = 1000x^2

Therefore, the weight in grams is 1000x2 1000x^2 .

The correct choice corresponding to this result is:

  • Choice 1: 1000x2 1000x^2

In summary, the equivalent of x2 x^2 kilograms in grams is 1000x2 1000x^2 .

Answer

1000x2 1000x^2

Exercise #9

38714kg=?T 387\frac{1}{4}kg=?T

Video Solution

Step-by-Step Solution

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

  • Step 1: Convert the mixed number into a decimal.
  • Step 2: Use the correct conversion factor to translate kilograms into metric tons.

Let's begin the conversion:


Step 1: Convert the given weight 38714 387\frac{1}{4} kilograms into a decimal.
To convert 38714 387\frac{1}{4} , decode the mixed number: 14=0.25 \frac{1}{4} = 0.25 , so 38714=387+0.25=387.25 387\frac{1}{4} = 387 + 0.25 = 387.25 kg.

Step 2: Use the conversion factor 1 metric ton=1000 kg 1 \text{ metric ton} = 1000 \text{ kg} to convert kilograms into metric tons.
Calculate by dividing the kilograms by 1000:
387.25 kg÷1000=0.38725 metric tons.387.25 \text{ kg} \div 1000 = 0.38725 \text{ metric tons}.

Therefore, the weight of 38714 387\frac{1}{4} kg is equivalent to 0.38725 0.38725 metric tons.

Answer

0.38725 0.38725

Exercise #10

x2×100kg=?T x^2\times100kg=?T

Video Solution

Step-by-Step Solution

To convert the given expression from kilograms to tons, we need to follow these steps:

  • Step 1: Express the weight in kilograms. The given expression is x2×100 kg x^2 \times 100 \text{ kg} .
  • Step 2: Convert kilograms to tons by dividing by 1000, because 1 ton=1000 kg 1 \text{ ton} = 1000 \text{ kg} .

Now, implementing these steps, we first have the expression in kilograms:
x2×100 kg x^2 \times 100 \text{ kg}

To convert this to tons, divide by 1000:
x2×1001000 \frac{x^2 \times 100}{1000}

Simplify the expression:
=x210 = \frac{x^2}{10}

This result shows that the expression x2×100 kg x^2 \times 100 \text{ kg} is equivalent to x210 tons \frac{x^2}{10} \text{ tons} .

Therefore, the correct answer is:

x210\frac{x^2}{10}

Answer

x210 \frac{x^2}{10}

Topics learned in later sections

  1. Units of Volume
  2. Time units
  3. Currency Units