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Introduction: Decimal

ii Express 35...

Question

Question 3 (ii)
Express 35 mm in cm, m and km

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Solution

$Express 35 mm in cm, m and km. 10 m m = 1 c m ∴ 1 m m = \frac{1}{10} c m \Rightarrow 35 m m = \frac{35}{10} = 3.5 c m N o w, 100 c m = 1 m e t e r ∴ 1 c m = \frac{1}{100} m e t e r \Rightarrow 3.5 c m = \frac{3.5}{100} = 0.035 m e t e r A g a i n 1000 m e t e r s = 1 k i l o m e t e r s ∴ 1 m e t e r = \frac{1}{1000} k i l o m e t e r \Rightarrow 0.035 m e t e r = \frac{0.035}{1000} = 0.000035 k i l o m e t e r$

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Introduction: Decimal

Standard VII Mathematics

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