Adding and taking away
Grade 2 · Math
Explore numbers, spot patterns and explain how you worked it out.
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Take your time, try a game and collect stars.
Addition and subtraction facts to 20
Type as many addition and subtraction facts to 20 as you can in 60 seconds. Free Grade 2 math game.
Play Addition and subtraction facts to 20
Learning about adding and taking away
In this Grade 2 math collection, you can practice Addition and subtraction facts to 20. Choose a game above for a short activity, or explore the examples below before you play. The full guide for each game explains its controls, gives more examples and includes a free printable for practice away from the screen.
Talk it through
Use counters, a drawing or a number line before moving to a mental method. Ask your child to explain a choice, then change one number and try the method again.
Ask: “How could you show the same answer another way?” Give your child time to explain. Return to an example after playing and ask whether they would approach it differently.
Addition and subtraction facts to 20
This is a sprint game: children type as many answers as they can in 60 seconds. The questions include straightforward facts (9 + 6 = ?), subtractions (17 − 8 = ?) and missing number forms (? + 5 = 13). Regular short sprints are one of the best ways to build fluency, and the timer shows progress clearly.
Try an example: 9 + 6 = ?
9 + 1 = 10, and 5 more is 15.
Show the answer
15
What to look out for
Rushing and typing an answer that is one out. Being one out often comes from counting on or back. Practice the bridging strategy instead.
Practice away from the screen
- Do one 60-second sprint a day and keep a chart of scores. Beat your best, not your sibling.
Curriculum connections
Addition and subtraction facts to 20
Supports part of Common Core 2.OA.B.2. This focused game does not cover the entire standard.
Common Core connection: 2.OA.B.2. This is focused practice for part of the standard.
Questions families ask
Where should we start with adding and taking away?
Start with Addition and subtraction facts to 20. Look at the worked example together, then try a round. If the task feels unfamiliar, use the full game guide or its free printable before trying again.
Does this cover everything taught at this level?
No. These games provide focused practice. Grade suggestions do not replace your school’s curriculum, and any Common Core connection applies only to the skill described.