Summer Missing Addition within 20 | Math Practice Worksheet for Kids

This 30 page math worksheet set is perfect for helping students in Grade 1 and Grade 2 practice missing number addition within 20. With fun summer-themed illustrations and clear layout, these worksheets help reinforce fluency, problem-solving, and number sense in a light and engaging way.

📘 Standards Common Core Alignment:

Grade 1:

• CCSS.MATH.CONTENT.1.OA.B.3
  Apply properties of operations as strategies to add and subtract.
• CCSS.MATH.CONTENT.1.OA.C.6
  Add and subtract within 20, demonstrating fluency for addition and subtraction within 10.
• CCSS.MATH.CONTENT.1.OA.A.1
  Use addition and subtraction within 20 to solve word problems.

Grade 2:

• CCSS.MATH.CONTENT.2.OA.B.2
  Fluently add and subtract within 20 using mental strategies.

Ideal for use in math centers, morning work, independent activities, early finishers, or as a summer review packet. No prep required—just print and go! Teachers and parents will appreciate the simplicity and effectiveness, while kids enjoy the playful design.

Make math fun this summer and keep your students’ skills sharp with these cute and easy-to-use practice pages!

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