Real-world examples of dividing whole numbers by decimals

📚 Quick Study Guide

• 🔢 Dividing whole numbers by decimals involves understanding place value.
• ➗ To divide, you can convert the decimal into a whole number by multiplying both the divisor (the decimal) and the dividend (the whole number) by a power of 10.
• ✍️ The number of places you move the decimal in the divisor is the same number of places you move the decimal (or add zeros) in the dividend.
• 📐 Example: $10 \div 0.5 = (10 \times 10) \div (0.5 \times 10) = 100 \div 5 = 20$
• 💡 This makes the division easier to perform!

🧪 Practice Quiz

1. A construction worker needs to cut a 12-meter pipe into sections that are 0.8 meters long. How many sections will he have?
   1. 14
   2. 15
   3. 16
   4. 17
2. A baker has 36 kg of flour. He uses 2.4 kg of flour for each cake. How many cakes can he bake?
   1. 12
   2. 13
   3. 14
   4. 15
3. A student has 25 dollars and wants to buy notebooks that cost $2.50 each. How many notebooks can she buy?
   1. 8
   2. 9
   3. 10
   4. 11
4. A runner wants to run 10 km. Each lap around the track is 0.4 km. How many laps does the runner need to complete?
   1. 20
   2. 22
   3. 25
   4. 28
5. A farmer has 45 liters of pesticide. He uses 1.5 liters per field. How many fields can he spray?
   1. 25
   2. 30
   3. 35
   4. 40
6. A tailor has 60 meters of cloth. He needs 1.2 meters to make a shirt. How many shirts can he make?
   1. 40
   2. 50
   3. 60
   4. 72
7. A bottle contains 750 ml of juice. How many servings of 12.5 ml are in the bottle?
   1. 50
   2. 60
   3. 75
   4. 80