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Standard Form

Stuck? Read the notes

	Answers
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To write an answer in standard form, use the e key as you would on a calculator. E.g. if an answer is 4.3\times 10^{5}, you should write 4.3e5

Write the following numbers in standard form.

1. 2400
2. 641000
3. 31820000
4. 6600000
5. 6290
6. 0.00007
7. 0.000085
8. 0.00000029

What numbers do these represent?

9. 2.54 \times 10^{6}
10. 3 \times 10^{6}
11. 9.68 \times 10^{7}
12. 6.1 \times 10^{3}
13. 4.7 \times 10^{-2}
14. 6.34 \times 10^{-1}
15. 5.8 \times 10^{0}
16. 7.904 \times 10^{5}

Given that a = 2 \times 10^{3} and b = 4 \times 10^{2}:

17. Write down the value of a in full.
18. Write down the value of b in full.
19. Work out the value of a+b as an ordinary number.
20. Work out the value of a+b in standard form.