Adding whole numbers means that we are combining numbers to form a total.

**Example**

Count the objects and work out their total.

+

**Method**

10 + 2

So, the answer is: **12**

In this worksheet, students count and add the numbers in the range 10-20.

**Key stage:** KS 1

**Curriculum topic:** Number: Addition and Subtraction

**Curriculum subtopic:** Solve Add/Subtract Problems to 100

**Difficulty level:**

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