10 printable sets · answer key on every set

Addition Within 5 Worksheets

CCSS K.OA.A.5
10 problems per set
Answer key included

What this skill is

Joining two small groups and naming the total, with sums no greater than 5.

When it comes up: Mid-kindergarten, usually alongside counting objects.

The mistake to watch for

Counting the first group again from one instead of counting on. For 3 + 2 a child restarts at "one, two, three" rather than starting at three.

How to help

Cover the first group with your hand and say its number out loud. The hidden group can't be recounted, so counting on becomes the easier path.

Next: Addition within 10.

A worked example

Try 2 + 3. Hold up two fingers on one hand and three on the other, then count them all: 1, 2, 3, 4, 5. So 2 + 3 = 5.

Words to know

add: To put numbers together to find how many in all.
plus: The sign ( + ) that means add.
equal: The same amount. The sign = means "is equal to".
total: All of the things added together.
sum: The answer you get when you add.

Practice

Add.

Showing Set 1 · 10 problems

2 + 2 =
1 + 3 =
4 + 1 =
1 + 4 =
2 + 1 =
3 + 2 =
1 + 1 =
2 + 3 =
3 + 1 =
1 + 2 =

Download this set10 problems · answer key included PDF

Answer key

All 10 sets

Each set is a different list of 10 problems with its own answer key. Use the buttons above to look at one on this page, or download any of them as a PDF.

How these sheets were made

Problems are generated for each set and checked against K.OA.A.5 before the sheet is built — no duplicates, and every problem falls inside the standard's number range.