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12 June, 07:35

How do you subtract a integer from another integer without using a number line or counters

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  1. 12 June, 08:13
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    This is how I do it. If it is a negative minus a negative, I combine the two - signs to make it an addition problem. Ex. - 3 - - 4 makes - 3+4. The answer would be one.

    If it is a negative plus a negative, keep the sign on the greater number and take away the sign the smaller number. Ex. - 7 + (-9). Keep the sign on the 9. - 7 - 9. The answer would be - 16.
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