Question

Tammy estimated the product of 4.2 and 5.9, then calculated the exact product. Analyze her work and decide if she made an error.

Answer 1

The product of the whole integers is 24, hence Tammy’s estimate is right, but the actual product should be 24.78.

Product of decimals

The decimal numbers are written with the decimal point included. For instance 2.3 is pronounced as 2 point 3.

Given the product of the decimals

4.2 * 5.9

The following calculation was made by Tammy

Estimated product: 4.2 (5.9) almost-equals 4 (6) almost-equals 24. Exact product: 4.2 (5.9) = 2.478.

4.2 is approximately equal to 4

5.9 is approximately equal to 6

Take the product of the whole number

Product = 4 * 6 = 24

Since the product of the whole integers is 24, hence Tammy’s estimate is right, but the actual product should be 24.78.

Learn more on product of decimals here: brainly.com/question/970783

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