Adding and Subtracting Decimals in Slytherin Math

What is the first step when adding decimals?

• Add zeros to the numbers

• Line up the decimal points

• Estimate the sum

• Subtract the smaller number from the larger number

In the example of adding 23.1 and 5.8, what is the sum?

• 28.9

• 29.1

• 27.9

• 30.1

When estimating the sum of 29.6 and 14.7, what is the approximate result?

• 35

• 50

• 45

• 40

What is the first step when subtracting decimals?

• Subtract the smaller number from the larger number

• Add zeros to the numbers

• Line up the decimal points

• Estimate the difference

In the example of subtracting 4.278 from 6, what is the difference?

• 1.822

• 1.922

• 1.722

• 1.622

What is the result of subtracting 4.216 from 23?

• 18.784

• 19.784

• 20.784

• 17.784

What is the sum of 54.7 and 21.4?

• 74.1

• 75.1

• 76.1

• 77.1

What is the result of adding 14.2 and 23.5?

• 37.7

• 36.7

• 38.7

• 35.7

What is the difference when subtracting 3.671 from 9.543?

• 5.772

• 5.972

• 5.872

• 5.672

What is the result of subtracting 9.09 from 14?

• 6.91

• 3.91

• 4.91

• 5.91