Decimal Worksheets | Adding Decimals using Number Lines

This collection of worksheets is designed exclusively for students of Grade 5. Learn to use number lines to sum up decimals with two or three addends. Worksheets are categorized into place values of tenths, hundredths and thousandths for convenient downloads. Grab some of these worksheets for free!

Number Line Addition

Observe each number line and complete the addition sentences containing decimals. The printable worksheets are segregated according to place values up to thousandths along with a section that contains a mixed review.

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  • exercise 1
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Two Addends: Draw Hops

Indicate hops on the number line to complete the decimal addition sentence. Longer hops drawn will denote the whole number part and the smaller hops will indicate the decimal part.

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Two Addends: Fill in the Missing Numbers

Read each number line in this pdf practice set. Fill in the missing decimals in each addition sentence based on the intervals observed. Answer keys are included.

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Write the Addition Sentences

The start and the endpoints of the number line represents the first addend and the sum respectively. Observe the intervals to find the second addend. Then, frame the addition sentences.

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  • exercise 1
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Number Line Addition: Ruler Model

The ruler model is followed in this batch of printable number line worksheets. Observe the big and small hops indicated and frame the addition sentences.

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Number Line: Column and Horizontal Addition

Use the number lines provided to solve each problem displayed in both vertical and horizontal formats. This series of worksheets is split in accordance to place values up to thousandths.

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  • exercise 1
  • exercise 2
  • exercise 3
  • exercise 4
  • exercise 5
  • practice 1
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  • practice 5

Three Addends: Draw Hops

Indicate hops to show the sum of three decimals. Then, complete the addition sentence. Print these pdf worksheets for an in-class assignment.

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Three Addends: Fill in the Missing Numbers

Observe the number line and complete the addition sentence. The problems are based on decimal addition involving three addends.

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  • exercise 2
  • exercise 3
  • exercise 4
  • exercise 5
  • practice 1
  • practice 2
  • practice 3
  • practice 4
  • practice 5
  • pdf 1
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  • pdf 5