Two marks example problems III — task. Mathematics State Board, Class 8.

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Answer variants:

$186000$

$3.64 \times 10^{10}$

$7.4 \times 10^{-8}$

$0.0000227$

$0.000227$

$7.4 \times 10^{-2}$

$3.64 \times 10^{9}$

$18600000$

1. Combine the scientific notations:

(i)

$(7 \times 10^2) (5.2 \times 10^7)$

$=$

(ii)

$(3.7 \times 10^{-5}) (2 \times 10^{-3})$

$=$

2. Write the following scientific notations in standard form:

(i)

$2.27 \times 10^{-4}$

$=$

(ii) Light travels at

$1.86 \times 10^5$ miles per second

$=$ Light travels at

miles per second

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7. Two marks example problems III