Subtract 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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Subtract: (7.7 × 10⁶) − (2 × 10⁶). Write the answer in scientific notation, like 4.7 × 10^3.
Answer: 5.7 × 10^6
Subtract: (5.9 × 10²) − (2.3 × 10²). Write the answer in scientific notation, like 4.7 × 10^3.
Answer: 3.6 × 10^2
Subtract: (1.8 × 10⁶) − (1.2 × 10⁶). Write the answer in scientific notation, like 4.7 × 10^3.
Answer: 6 × 10^5
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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