Real-World Examples of Powers of Ten for Kids

📚 Quick Study Guide

• 🔢 A power of ten is a number that can be obtained by multiplying 10 by itself a certain number of times.
• 📝 It's written as $10^n$, where 'n' is the exponent and tells you how many times to multiply 10 by itself.
• 🌍 $10^0 = 1$ (Anything to the power of 0 is 1).
• 🔭 $10^1 = 10$
• 🔬 $10^2 = 10 \times 10 = 100$
• 💡 $10^3 = 10 \times 10 \times 10 = 1000$, and so on!
• 🌌 Each time you increase the exponent by one, you're multiplying by 10, making the number ten times larger.

Practice Quiz

1. What is $10^2$ equal to?
   1. 10
   2. 100
   3. 1000
   4. 1
2. The distance to a star is $10^6$ kilometers. What does this mean?
   1. 10 kilometers
   2. 100 kilometers
   3. 1,000,000 kilometers
   4. 1,000 kilometers
3. A bacteria is $10^{-3}$ meters long. What does the negative exponent mean?
   1. The bacteria is 1000 meters long.
   2. The bacteria is \frac{1}{1000} of a meter long.
   3. The bacteria is 10 meters long.
   4. The bacteria is \frac{1}{100} of a meter long.
4. What is $10^0$?
   1. 0
   2. 10
   3. 1
   4. 100
5. A computer can perform $10^9$ calculations per second. What is this called?
   1. Kilocalculation
   2. Megacalculation
   3. Gigacalculation
   4. Teracalculation
6. Which of these is equal to 1,000,000,000?
   1. $10^6$
   2. $10^7$
   3. $10^8$
   4. $10^9$
7. If something is $10^{-2}$ meters, it is the same as:
   1. 100 meters
   2. 10 meters
   3. 0.01 meters
   4. 0.1 meters