Addition with ten frames (sums within 20)

Before handing out the worksheet, briefly introduce the concept with a short oral warm-up or a visual model on the board. Let students work through the first item together as a class, then finish the rest independently or with a partner, encouraging them to talk through their thinking: "What strategy are you using? How do you know that is right?" After completing the worksheet, review any missed problems together and discuss the reasoning rather than just the answer. For extra support, let students use manipulatives or draw pictures alongside the written problems. These addition worksheets work well as daily practice, homework, or a focused review activity.

These addition worksheets for 1st grade give students the structured, hands-on practice they need to build confidence and fluency. Students work through a range of problem formats, from visual models and diagrams to written equations and word problems, so they encounter addition from every angle. Each worksheet is designed to build on prior knowledge while introducing the level of challenge appropriate for 1st grade. Practicing addition at this stage strengthens the mathematical foundations that support more advanced concepts in later grades.

Yes, both. We made it for 1st Grade base 10 blocks, and the page works the same whether it lands on a kitchen table or a center rotation. At home, most families go through it together and talk the answers out loud, and that talking is where most of the learning happens with addition. In class it runs well as independent work while you pull a small group. Print one copy or thirty, whichever the day needs.

A grid of ten boxes, two rows of five, filled from the top left. Its value is that amounts become recognizable shapes: a full top row is always five, and eight always looks like a full row plus three. Children start seeing quantities instead of counting them one at a time.

Part of the frame is filled and your child works out how many more are needed to make 10. Because the empty boxes are visible, the answer can be seen before it is counted, which is exactly the bridge from counting to knowing.

Our number system is built on tens, so the pairs that make 10 turn up everywhere later. A child who knows 6 and 4 instantly can handle 16 plus 4, and later 26 plus 4, without counting. It is one of the highest value facts to have automatic.

Worksheets cover sums within 100, focusing on adding a one-digit number to a two-digit number and adding two two-digit numbers without regrouping.

They require students to interpret a visual model before computing, adding a reasoning step that promotes conceptual understanding over rote calculation.

Yes - having students build the problems with actual materials before drawing and computing on the worksheet supports multiple learning modalities.

19 printable worksheets, all free to preview. Downloads are included with a ClassWeekly free trial, and every page prints on standard 8.5 x 11 paper.

These are written for 1st Grade students, roughly ages 6-7. Many teachers also use them a grade up for review or a grade down as an extension, so use the preview to judge the fit for a particular child.

Yes. Each one shows the Common Core code it covers on its own page, so you can check the alignment yourself rather than taking our word for it.

Yes. Nothing here assumes a classroom of 25, so they work the same one-to-one at the kitchen table as they do in a 1st Grade classroom, a literacy centre, or a tutoring session.