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mollyann
Express the number in scientific notation. 0.000644 A. 6.44 × 10-5 B. 6.44 × 10-4 C. 6.44 × 10-3 D. 6.44 × 104
B. Decimal point moves to the left 4 times.
B. Count the number of times the decimal point has to move to be in the right spot