The mass of a brick is 2 kg 750 g. What is the total mass of 14 such bricks ?

Answer

To find the total mass of 14 bricks, we will follow these steps:

### Step 1: Convert the mass of a single brick to grams
The mass of one brick is given as 2 kg 750 g. We need to convert this into grams.

1 kg = 1000 g
So, 2 kg = 2 × 1000 g = 2000 g

Now, add the grams:
Total mass of one brick = 2000 g + 750 g = 2750 g

### Step 2: Calculate the total mass of 14 bricks
Now that we know the mass of one brick is 2750 g, we can find the mass of 14 bricks by multiplying the mass of one brick by 14.

Total mass of 14 bricks = 2750 g × 14

### Step 3: Perform the multiplication
Now, we will multiply 2750 by 14.

1. Multiply 2750 by 4 (the units place of 14):
- 0 × 4 = 0
- 5 × 4 = 20 (write 0, carry 2)
- 7 × 4 = 28 + 2 (carry) = 30 (write 0, carry 3)
- 2 × 4 = 8 + 3 (carry) = 11 (write 1, carry 1)

So, 2750 × 4 = 11000

2. Multiply 2750 by 1 (the tens place of 14):
- 0 × 1 = 0
- 5 × 1 = 5
- 7 × 1 = 7
- 2 × 1 = 2

So, 2750 × 1 = 2750

3. Now, add the two results:
- 11000
- 2750
- ---------
- 38500

### Step 4: Convert the total mass back to kg and g
Now we have the total mass in grams, which is 38500 g. We can convert this back to kilograms and grams.

1 kg = 1000 g, so:
38500 g = 38 kg and 500 g (since 38500 ÷ 1000 = 38 with a remainder of 500)

### Final Answer:
The total mass of 14 bricks is **38 kg 500 g**.

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