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Ten
The easiest way to do this question is not to think of it as multiplying by 0.2, but by multiplying it by two and then dividing it by ten. Thirty-two times two equals sixty-four, and sixty-four divided by ten equals six-point-four.
4.3
Four times 10 -8 times two point four times 10^3 divided by three times 10 -7 is equal to -63,967
Wrong! The correct answer is: six thousand, two hundred ninety-four ten-thousandths.