To the nearest whole number: the choice is either 99 or 100:
Halfway between 99 and 100 is 99.50.
Since 99.46 is less than 99.50, 99.46 rounds down to 99.
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To the nearest tenth: the choice is either 99.4 or 99.5:
Halfway between 99.40 and 99.50 is 99.45
Since 99.46 is larger than 99.45, it rounds up to 99.50.
To the nearest whole number: the choice is either 99 or 100:
Halfway between 99 and 100 is 99.50.
Since 99.46 is less than 99.50, 99.46 rounds down to 99.
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To the nearest tenth: the choice is either 99.4 or 99.5:
Halfway between 99.40 and 99.50 is 99.45
Since 99.46 is larger than 99.45, it rounds up to 99.50.