1. In a science lab there are three petri dish. The first dish contains 2.75 × 10^8 bacteria, the second dish contains 6.12 × 10^5 bacteria and the third contains 8.345 × 10^6 bacteria. In standard form, state how much bacteria is there in the petri dish in total?
2. An asteroid was 3.5 × 10^11 metres away from Earth. It is now 9.391 × 10^8. How far away is it now?
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1. In a science lab there are three petri dish. The first dish contains 2.75 × 10^8 bacteria, the se...
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