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Fact families to 18

Grade 2

What this lesson shows

6, 9 and 15. These three belong together — and once you know how, they give you four facts for the price of one.

Try it yourself

Real questions from this lesson's worksheets — answers below each one.

  1. 3 + ___ = 11
    Show answer
    8
  2. 1 + ___ = 10
    Show answer
    9
  3. 7 + ___ = 10
    Show answer
    3
  4. 5 + 4
    Show answer
    9

Practise this every day

Eduyro gives your child a short daily worksheet on exactly this skill, and moves them on only once they have it. Watch the lesson, then build the fluency.

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