Estimate Decimal and Whole Number Products

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To estimate the product of a decimal and a whole number, round the decimal to the nearest whole number and multiply it by the whole number.

For example, if the decimal is 3.8 and the whole number is 9, you would round 3.8 to 4 and multiply it by 9. The estimated product would be 36.

If the decimal is 2.5 and the whole number is 7, you would round 2.5 to 3 and multiply it by 7. The estimated product would be 21.

It's important to note that these are only estimates and may not be exactly accurate.