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Addition within 10

Mathematics Grade 1 Difficulty 2/5

Beginning of the lesson

Addition within 10

Addition means putting things together.

We use the plus sign (+).

We add to find how many in all.

Interactive visualization — available in the full lesson
+
Interactive visualization — available in the full lesson
=
Interactive visualization — available in the full lesson

2 + 1 = 3

We can count to add numbers.

We can use our fingers too!

The answer is called the sum.

Addition within 10 means the sum is 10 or less.

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In the full lesson

  • The complete explanation
  • Worked examples
  • Common mistakes and how to avoid them
  • Test questions: 76
  • AI tutor that answers questions about the topic
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