Grade 1 addition practice

Addition Within 20 Worksheets

Print eight addition-within-20 questions with simple directions, a word problem, and a teacher answer key.

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Addition Within 20 printable

Grade 1 - Math - Math Printables - Standard

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Complete each activity about Addition Within 20. Show your thinking where space is provided.

1. 7 + 5 = ____

2. 9 + 4 = ____

3. 6 + 8 = ____

4. 10 + 3 = ____

5. Draw dots to show 5 + 6, then write the answer.

6. Mia has 8 crayons. She gets 7 more. How many crayons does she have now?

7. Circle the equation that equals 15: 7 + 8, 6 + 7, or 9 + 5.

8. Write two numbers that add to 20.

Answer key

12
13
14
13
11
15 crayons
7 + 8
Answers may include 10 + 10, 9 + 11, or another pair with a sum of 20.

Generated output

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Answer key
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Layout
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Build sums with parts students can see

Begin with counters, dots, fingers, or a ten frame so each addend represents a group that can be combined. The printable should keep every total at 20 or less and provide enough working space for a child to draw a model before recording the matching equation.

Move from counting on to making ten

Use early questions to practice starting with the larger addend and counting on. When students are ready, discuss how a pair such as 8 + 5 can become 10 + 3. Review the page to ensure that pictures, equations, and stories all describe addition rather than an unexplained change of operation.

Check the relationship between model and total

After students finish, ask them to point to each part, state the combined total, and compare that reasoning with the teacher key. A wrong total may come from recounting a group, skipping a number while counting on, or confusing an addend with the sum; the written work helps identify which support is needed.

How it works

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Who it helps

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FAQ

Common questions

Are all addition sums 20 or less?

Yes. Review the generated preview to confirm each total stays within the selected addition range.

Can students draw a model?

Yes. Use a one-column layout or a shorter question count when children need room for dots, ten frames, or number bonds.

Does the page practice making ten?

It can. Enter making ten or bridging through ten as the topic, then verify that the examples match the strategy taught.

Can I include an addition story?

Yes. Check that the story combines two quantities and clearly asks for the new total.

How do I use the answer key?

Confirm each sum first, then use student drawings or equations to discuss how the two parts were combined.