Classroom · Math · Kindergarten and 1st grade

Addition within 10 worksheets

A free five-page pack: one strategy with a worked example, problems to count and write, practice with number lines, columns and missing numbers, a fact family, word problems and an answer key.

Download the addition within 10 pack(5 pages, color)Ink saver (B&W)

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Watch it solved

54 sec · with voice and captions

A pencil works one example of each activity, so you can see how the worksheet goes before you print it. Tap a step to jump to it. The rest of the sheet is left for your child to finish.

Read what the video says

0:00 Let's practice addition within 10, step by step.
0:04 Start at the bigger number and count on. For 2 plus 7, start at 7 and count on two: 8, 9. So 2 plus 7 equals 9.
0:14 Count the pictures, and write the numbers. 1 plus 7 equals 8.
0:19 Solve each one. 4 plus 1 is 5.
0:23 Use the number line. Start at 2, and hop forward 2. You land on 4.
0:29 Find the missing number. 2 plus what makes 6? 4.
0:33 Fact family. Use 2, 6 and 8 to write four facts. 2 plus 6 is 8.
0:39 Aisha has 9 balls. Omar gives Aisha 1 more. How many balls does Aisha have now? 9 plus 1 is 10.
0:48 Great job! Now print the free worksheet, and finish the rest on your own.

How to do it

Start at the bigger number and count on. For 2 + 7, start at 7 and count on two: 8, 9. So 2 + 7 = 9.

Teaching tip

Order does not matter: 2 + 7 and 7 + 2 are both 9, so always count on from the bigger number.

Try some

4 + 1 = ?5
3 + 1 = ?4
1 + 6 = ?7
3 + 7 = ?10
1 + 8 = ?9
7 + 3 = ?10
3 + 4 = ?7
5 + 3 = ?8

Tap a problem to see the answer.

Word problems

Aisha has 9 balls. Omar gives Aisha 1 more. How many balls does Aisha have now?Show answer

9 + 1 = 10

There is 1 bee on a flower. 2 more come. How many bees are there now?Show answer

1 + 2 = 3

Noor has 6 pencils. Ben gives Noor 2 more. How many pencils does Noor have now?Show answer

6 + 2 = 8

There is 1 bird on a branch. 6 more come. How many birds are there now?Show answer

1 + 6 = 7

What the worksheets look like

Addition within 10 worksheet with a worked example and problems to count — Page 1: the strategy, then count and write

Addition within 10 word problems worksheet — Page 4: word problems

Common questions

How do you teach addition within 10?

Start at the bigger number and count on. For 2 + 7, start at 7 and count on two: 8, 9. So 2 + 7 = 9. Order does not matter: 2 + 7 and 7 + 2 are both 9, so always count on from the bigger number.

What grade is addition within 10?

Usually kindergarten and 1st grade. In the Common Core it is part of K.OA.A.2, 1.OA.C.5, 1.OA.C.6.

Is there an answer key?

Yes. Page 5 has every answer from the pack and a short teaching tip. The worksheet maker also adds an answer key to every sheet it makes.