Add numbers in scientific notation
When the powers of 10 match, add or subtract the numbers in front. Then make sure the front number is between 1 and 10.
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Add: (6.9 × 10²) + (8.1 × 10²). Write the answer in scientific notation, like 4.7 × 10^3.
Answer: 1.5 × 10^3
Add: (7.5 × 10⁴) + (7.9 × 10⁴). Write the answer in scientific notation, like 4.7 × 10^3.
Answer: 1.54 × 10^5
Add: (4.2 × 10⁸) + (3.4 × 10⁸). Write the answer in scientific notation, like 4.7 × 10^3.
Answer: 7.6 × 10^8
Tip: When the powers of 10 match, add or subtract the numbers in front. Then make sure the front number is between 1 and 10.
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