Word Problems on Metric Unit Conversion — Printable Math Worksheet - Free Printable

Let's solve each of the metric unit conversion problems step by step.

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Problem 1:

A bag of rice weighs 4.5 kg. If Mark uses 800 g of rice, how much rice is left in kilograms?

#### Step 1: Convert grams to kilograms
We know:
- 1 kg = 1000 g

So,
- 800 g = $ \frac{800}{1000} = 0.8 $ kg

#### Step 2: Subtract used rice from total
Total rice = 4.5 kg
Used rice = 0.8 kg

Rice left = $ 4.5 - 0.8 = 3.7 $ kg

✔ Answer: 3.7 kg of rice is left.

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Problem 2:

Sam had a ribbon that was 2.25 m long. He cut it into pieces, each 75 cm long. How many pieces did he get from the ribbon?

#### Step 1: Convert meters to centimeters
We know:
- 1 m = 100 cm

So,
- 2.25 m = $ 2.25 \times 100 = 225 $ cm

#### Step 2: Divide total length by length of each piece
Each piece = 75 cm
Number of pieces = $ \frac{225}{75} = 3 $

✔ Answer: 3 pieces

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Problem 3:

Mia has juice bottles that can hold 350 ml each. If she drinks one bottle daily for a week, how many liters of juice does she drink in total?

#### Step 1: Find total milliliters consumed in a week
One bottle = 350 ml
One week = 7 days

Total ml = $ 350 \times 7 = 2450 $ ml

#### Step 2: Convert milliliters to liters
We know:
- 1 liter = 1000 ml

So,
- 2450 ml = $ \frac{2450}{1000} = 2.45 $ liters

✔ Answer: 2.45 liters of juice

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✔ Final Answers:

1. 3.7 kg
2. 3 pieces
3. 2.45 liters

These are the correct solutions with proper unit conversions!