10-09-2015
Mathematics

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

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thibbi1263 thibbi1263

10-09-2015

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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