Skill you are practising: Subtracting doubles

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Subtract:

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=
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Oh no! That was incorrect!

Correct answer:

Here is an explanation

First, let's check the question

Subtract:

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=
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Your incorrect answer is:

Next, let's check the solution.

Doubles facts
2 - 1 = 1 12 - 6 = 6
4 - 2 = 2 14 - 7 = 7
6 - 3 = 3 16 - 8 = 8
8 - 4 = 4 18 - 9 = 9
10 - 5 = 5 20 - 10 = 10
2 4 6 8 10 12 14 16 18 20
- 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10
1 2 3 4 5 6 7 8 9 10

Let's now jump over to see how to solve this question

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