Question

Write the number 40 000 000 in standard form.

(1 mark)

Answer 1

Step-by-step explanation:

(i) 81 900 000 000 000

Write the first 8

Add a point after it: 8.

Now the number of digits after 8. There are 13 digits.

So, in standard form: 81 900 000 000 000 is 8.19 × 10¹³

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Answer 2

Answer:

4× 10^7

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