GCSE Maths

Standard Form Answers

writing the speed of light in standard form

Here are the answers to the test. Question 1 is easy. The second does not end up in standard form, so we have to adjust the answer. Question 3 is straightforward enough.
  1. 2 × 104 × 4 × 102 = 8 × 106
  2. 3 × 1015 × 5 × 103 = 15 × 1018 = 1·5 × 1019
  3. 8 × 1060 ÷ 2 × 1020 = 4 × 1040

You have learned much - time for a summary!

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