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Envision Math 2.0: Grade 6, Volume 1

EM

Envision Math 2.0: Grade 6, Volume 1 View details

Review

Exercise 9 Page 56

To subtract decimals, line up the decimal points so that place-value positions correspond.

14.92

Practice makes perfect

Before we find the exact difference, we can make an estimate by rounding each number. We will round 24.52 to 25 and 9.6 to 10 because they are the closest whole numbers. 25-10=15

The difference between 24.52 and 9.6 is about 15. To subtract decimals, we line up the decimal points so that place-value positions correspond. Annex a zero so each place has a digit.

decimal points aligned

Now we subtract the decimals just as we would with whole numbers and place the decimal point in the answer.

subtraction

Our answer 14.92 is really close to our estimation!

Subchapter links

Topic Essential Question p.55

Vocabulary Review p.55

Use Vocabulary in Writing p.55

1 Fluently Add, Subtract, and Multiply Decimals p.56

2 Fluently Divide Whole Numbers and Decimals p.56

3 Mutliply Fractions p.57

4-5 Understand and Divide with Fractions p.57

6 Divide Mixed Numbers p.58

7 Solve Problems with Rational Numbers p.58