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Addition and subtraction to 20 – practice for Years 1–2

Sample questions on Addition and subtraction to 20 with the right answer and a worked solution, from easy to hard. In the Pickles Academy app a child gets new questions of the same kind every time, so they can't just learn the answers by heart.

Subject
Maths
Year
Years 1–2
Curriculum area
Number and algebra

Question types: Sums up to 20

Rule: Addition and subtraction to 20

To cross ten, work in two steps: first make 10 (or go back to 10), then add or take away the rest.

Example: 8 + 5: 8 + 2 = 10, 10 + 3 = 13

Watch out: 13 − 5 is not 12. First 13 − 3 = 10, then 10 − 2 = 8.

Sample questions

  1. Question 1 Easy

    Work out: 5 + 4 =

    Show the solution
    Answer: 9

    How it works: 5 + 4 = 9

  2. Question 2 Normal

    Work out: 12 + 6 =

    Show the solution
    Answer: 18

    How it works: 12 + 6 = 18

  3. Question 3 Hard

    Work out: 8 + 3 =

    Show the solution
    Answer: 11

    How it works: Bridging through ten: 8 + 2 = 10, 10 + 1 = 11

Related topics

All Maths topics

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