2025 AISS PRELIMS P1 Q20

2025 AISS PRELIMS P1 Q20

Secondary 4
3 marks
  1. Write (0.0000000357) in standard form.[1]
  2. Write (5.7\times10^{97}) in the form (A\times10^{98}).[1]
  3. Hence work out ((100.2\times10^{98})-(5.7\times10^{97})). Give your answer in standard form.[1]

Solution:

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Answer:(a) \(3.57\times10^{-8}\) (b) \(0.57\times10^{98}\) (c) \(9.963\times10^{99}\)

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