EM-2399

Standard form

E Math · Secondary 4 · Medium · Standard form

A company records its monthly electricity usage as follows:

January:

3.2\times10^5

kWh
February:

4.5\times10^5

kWh
March:

2.85\times10^6

kWh

Find the total electricity used from January to March, giving your answer in standard form correct to 3 significant figures.

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