To multiply \(23.7\) by \(4\) without using a calculator, you can set it out like this: One decimal place is used in the calculation therefore the solution should also contain one decimal place.
Calculate \((4.5 \times 10^4) + (6.45 \times 10^6)\). Work out \((4 \times 10^9) \times (7 \times 10^{-3})\). Multiply the first numbers \(4 \times 7 = 28\). Apply ...
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