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10 x 105 equates to one million (1,000,000).
The nano- prefix means × 10^-9 The milli- prefix means × 10^-3 1 mg = 10^-3 g = 10^(6-9) g = 10^6 × 10^-9 = 10^6 ng To convert mg to ng multiply by 10^6 = 1,000,000 → To convert ng to mg divide by 10^6 → 5000 mg = 5000 ÷ 1,000,000 ng = 0.005 ng ------------------------------------------------------------------------------------------------------------------------ Alternatively, manipulating the powers of 10: 5000 ng = 5000 × 10^-9 g = 5000 × (10^-6-3) g = 5000 × 10^-6 × 10^-3 g = (5000 × 10^-6) mg = 0.005 mg
5 x 10^3
Depends on what 5000 is: 1 decimetre = 10 centimetres so 5000/10 = 500 cm 10 decimetres = 1 metre so 5000/10 = 500 metres
5000 x 10 = 50000