LET’S TRY ONE
Write (2 × 102) × (3 × 103) in scientific notation.
6 × 105
Multiply coefficients and add exponents, then make the leading coefficient at least 1 and less than 10: 6 × 105.
Learning steps & teaching tips
Multiply powers-of-ten notation and normalize the result.
- Multiply coefficients, add exponents, then adjust the leading coefficient.
- Work through the example and explain why each operation is used.
- Estimate or use another method to check the result before choosing.
Try it together
Work with a partner: solve one example, explain the method, then change one number and predict what changes.
Multiply coefficients, add exponents, then adjust the leading coefficient.