🔍 Key Concepts

• Metric prefixes and how they scale by powers of 10 • The sequence of common prefixes: kilo, mega, giga, tera • How many zeros are in a thousand, million, billion, and trillion

💭 Think About

• Start with what you know: if kilo is 10 to the 3rd and mega is 10 to the 6th, what comes next in order? • Think about digital storage sizes: kilobyte, megabyte, gigabyte, terabyte—how does each step change the size? • Match each word (thousand, million, billion, trillion) to the number of zeros, then connect that to powers of 10.

✅ Before You Answer

• Be sure you know that kilo = 10^3 and mega = 10^6 before deciding on giga • Confirm how many zeros are in a billion vs a trillion • Check that your choice fits the pattern of increasing size: kilo < mega < giga < tera