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3 May, 19:49

David added 2 and - 3 using the number line tool. Which of the following errors did he make?

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  1. 3 May, 20:11
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    When adding 2 and - 3 the correct answer is - 1. Mathematically it can be seen as: 2 + (-3) = 2 - 3 = - 1. You must always remember that different signs are subtracted and that equal signs are added when making algebraic sums.
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