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Multiplying and dividing by powers of 10

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Count the zeros

Multiply → digits move LEFT (bigger)3.45× 100345Divide → digits move RIGHT (smaller)16.8÷ 101.6810 → 1 place100 → 2 places1000 → 3 places
  1. 110² = 100, 10³ = 1000, 10⁵ = 100 000.