Addition with Regrouping with Two-Digit Numbers within 20

Worksheets with structured exercises and tasks for practicing addition with two-digit numbers within 20 for Grade 1 Math — easy to download and print as PDFs.

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A fundamental prerequisite for addition with regrouping is a solid understanding of quantities, numbers, and structure when solving math problems. Regrouping is an important step that children practice using various materials, such as counting chips, or other simple objects like marbles or gummy bears.

Through these exercises, children learn how to grasp a quantity by adding to it. It's also beneficial if children describe what they are doing while working with the materials. This helps teachers and parents recognize whether the children are just counting or truly understanding and engaging with the concept of quantity. After practicing with materials, children can begin solving simple problems with two-digit numbers within 20.