Question
Give your examples of each rule.
✓
Answer
Rules for Addition:
1. The sum of two positives is positive.
3 + 4 = 7
2. The sum of two negatives is negative.
(-4) + (-6) = -10
3. To add a positive number and a negative number, subtract the smaller number (without the sign) from the greater number (without the sign), and place the sign of the greater number to obtain the result.
(-3) + 4 = 1
4. The sum of a number and its inverse is zero.
(-4) + 4 = 0
5. The sum of any number and zero is the same number.
(-7) + 0 = -7
Rules for Subtraction:
1. If a smaller positive is subtracted from a larger positive, the result is positive.
9 – 8 = 1
2. If a larger positive is subtracted from a smaller positive, the result is negative.
7 – 8 = -1
3. Subtracting a negative number is the same as adding the corresponding positive number.
3 – (-5) = 3 + 5 = 8
4. Subtracting a number from itself gives zero.
9 – 9 = 0
5. Subtracting zero from a number gives the same number.
8 – 0 = 8
1. The sum of two positives is positive.
3 + 4 = 7
2. The sum of two negatives is negative.
(-4) + (-6) = -10
3. To add a positive number and a negative number, subtract the smaller number (without the sign) from the greater number (without the sign), and place the sign of the greater number to obtain the result.
(-3) + 4 = 1
4. The sum of a number and its inverse is zero.
(-4) + 4 = 0
5. The sum of any number and zero is the same number.
(-7) + 0 = -7
Rules for Subtraction:
1. If a smaller positive is subtracted from a larger positive, the result is positive.
9 – 8 = 1
2. If a larger positive is subtracted from a smaller positive, the result is negative.
7 – 8 = -1
3. Subtracting a negative number is the same as adding the corresponding positive number.
3 – (-5) = 3 + 5 = 8
4. Subtracting a number from itself gives zero.
9 – 9 = 0
5. Subtracting zero from a number gives the same number.
8 – 0 = 8
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