Grade 7 Math Quiz: Convert Units for Practical Scenarios

📚 Quick Study Guide

• 📏 Length Conversions: Common units include meters (m), centimeters (cm), millimeters (mm), kilometers (km), inches (in), feet (ft), and miles (mi). Remember that $1 \text{ m} = 100 \text{ cm}$, $1 \text{ km} = 1000 \text{ m}$, $1 \text{ in} = 2.54 \text{ cm}$, and $1 \text{ mi} = 1.609 \text{ km}$.
• ⚖️ Weight Conversions: Units include grams (g), kilograms (kg), pounds (lb), and ounces (oz). Key conversions: $1 \text{ kg} = 1000 \text{ g}$, $1 \text{ lb} = 16 \text{ oz}$, and $1 \text{ kg} \approx 2.2 \text{ lb}$.
• ⏱️ Time Conversions: Convert between seconds (s), minutes (min), hours (hr), and days. Remember $1 \text{ min} = 60 \text{ s}$, $1 \text{ hr} = 60 \text{ min}$, and $1 \text{ day} = 24 \text{ hr}$.
• 💧 Volume Conversions: Units include liters (L), milliliters (mL), gallons (gal), and quarts (qt). Important conversions: $1 \text{ L} = 1000 \text{ mL}$, $1 \text{ gal} = 4 \text{ qt}$, and $1 \text{ L} \approx 0.264 \text{ gal}$.
• 💡 Conversion Factors: Use conversion factors to change from one unit to another. For example, to convert 5 meters to centimeters, multiply by the conversion factor $\frac{100 \text{ cm}}{1 \text{ m}}$.

✍️ Practice Quiz

1. What is 2.5 meters converted to centimeters?
   1. 25 cm
   2. 250 cm
   3. 0.25 cm
   4. 2500 cm
2. A recipe calls for 500 grams of flour. How many kilograms of flour is that?
   1. 5 kg
   2. 0.5 kg
   3. 50 kg
   4. 0.05 kg
3. How many minutes are there in 3 hours?
   1. 120 minutes
   2. 180 minutes
   3. 240 minutes
   4. 300 minutes
4. Convert 8 quarts to gallons.
   1. 1 gallon
   2. 2 gallons
   3. 3 gallons
   4. 4 gallons
5. A table is 72 inches long. How long is it in feet?
   1. 4 feet
   2. 5 feet
   3. 6 feet
   4. 7 feet
6. If a package weighs 4.4 pounds, approximately how many kilograms does it weigh?
   1. 1 kg
   2. 2 kg
   3. 3 kg
   4. 4 kg
7. Convert 1500 milliliters to liters.
   1. 0.15 liters
   2. 1.5 liters
   3. 15 liters
   4. 150 liters