Question

Isaiah portioned 4 1/4 ounces of chicken. Assume 1 ounce = 28.35 grams. What is the best estimate of grams of chicken Isaiah portioned?

Answer 1

Because we're estimating, we will round up 28.35 to the nearest tens value.

Look at the ones value:

28.35
8 > 5

8 is greater than 5, so we will round up 28.35 to 30.

There are 4 1/4 ounces of chicken. 4 1/4 in decimal form is 4.25. We will round this number to the nearest ones value. Look at the tenths value:

4.25
2 < 5

2 is lesser than 5, so we will round down 4.25 to 4.

There are now 4 ounces of chicken, and an ounce is equal to 30 grams. Multiply the ounces of chicken by how many grams are in an ounce:


`4 * 30 = 120`

The best estimate of grams of chicken that Isaiah portioned is 120 grams.