Addition within 20 Worksheets | Sums up to 20

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Scale new heights with our basic addition within 20 worksheets, comprising exercises for kids to add numbers that result in a total of up to 20. This PDF resource includes vertical and horizontal addition problems, writing addition sentences, comparing sums, identifying missing numbers, and much more! The answer keys facilitate easy evaluation. Utilize our free worksheets to give your practice an instant boost.

Counting and Adding

Keep your little ones busy counting pictures and writing the total number of objects as they work through these addition within 20 worksheets.

Counting and Adding

Writing Addition Sentences from Pictures

Grade 1 and grade 2 kids frame the addition sentence by counting the objects, writing the addends, and then finding the total number of objects.

Writing Addition Sentences from Pictures

Word Problems with Sums up to 20

Switch from standard to real-life problems with these handouts. Read the word problems, identify the addends, frame the addition equation, and find the sum.

Word Problems with Sums up to 20

Addition Using Ten Frames

Figure out the number of counters on each pair of ten frames to decode the addends and combine them to find their sum effortlessly.

Addition Using Ten Frames

Addition within 20 | Column

Graduate from counting pictures to adding numbers with these addition within 20 worksheets. Add the numbers arranged in columns and find the sum.

Addition within 20 - Column

Addition within 20 | Horizontal

Boost your addition skills with these printables packed with numbers arranged from left to right. Practice adding pairs of numbers that sum up to 20.

Addition within 20 - Horizontal

Decoding Riddles

Add a fun quotient to your practice as you solve the addition problems and map the answers with the letters to decode the riddles.

Decoding Riddles

Comparing Sums

Add the numbers on the right and left separately in these practice sheets and use the symbols to compare their sums.

Comparing Sums

Identifying Missing Numbers | Column

With one of the addends and the sum given, the task is for 1st grade and 2nd grade kids to identify the missing addend.

Identifying Missing Numbers - Column

Single-Digit Addition | Column

Reinforce skills with these worksheets on addition within 20 and practice calculating vertically arranged single-digit numbers.

Single-Digit Addition - Column

Single-Digit Addition | Horizontal

Encourage kids to find the sum of numbers from 0 to 9 arranged horizontally using the addition facts and gradually build their subitizing skills.

Single-Digit Addition - Horizontal