Adding Decimals

Topic: Adding Decimals

Objectives & Outcomes

• Students will be able to add decimals with a minimal amount of errors.

Materials

• Decimal worksheets
• Pencils
• Erasers

Warm-up

• Review what a decimal is and its place value.
• Have the students practice writing and adding decimals with a partner.
• Review and correct any mistakes.

Direct Instruction

• Introduce the concept of adding decimals.
• Discuss the difference between adding whole numbers and adding decimals.
• Explain that when adding decimals, we need to consider the decimal points and keep them aligned.
• Demonstrate how to add decimals using the strategy of adding the units first, then the tenths, and finally the hundredths.
• Have the students practice adding decimals using this strategy with a partner.
• Review and correct any mistakes.

Guided Practice:

• Have the students work in pairs or small groups and give each group a set of decimals to add.
• Have the students use the strategy of adding the units first, then the tenths, and finally the hundredths to add the decimals.
• Have the students share their answers with the class and check for accuracy.

Independent Practice

• Give each student a sheet of decimals to add and have them use the strategy of adding the units first, then the tenths, and finally the hundredths to add the decimals.
• Have the students use their pencils and rulers to check their answers and correct any errors.

Closure

• Review the steps for adding decimals: add the units, then the tenths, and finally the hundredths.
• Ask the students to share their strategies for adding decimals and how they used their pencils and rulers to check their answers.

Assessment:

• Observe the students during the independent practice to assess their understanding of the concept.
• Have the students complete a worksheet with multiple-choice questions on adding decimals.