Rules of Integers
Rules of Integers Rule 1 Two numbers have same sign Add the numbers Put the same sign Rule 2 Two numbers have different sign Subtract the numbers Copy bigger number sign
Worked Examples -7 + 3 7- 3 = 4 Answer : -4 -7- 3 Answer : -10 7 - 3 Numbers have different sign Using Rule 2 – Subtract the numbers and copy bigger number sign 7- 3 = 4 Bigger number sign is “ – “ Answer : -4 -7- 3 Numbers have same sign Using Rule 1- Add the numbers and copy bigger number sign 7 + 3 = 10 Bigger number sign is “ – “ Answer : -10 7 - 3 Here we can write it as +7 - 3 Numbers have different sign Using Rule 2 – Subtract the numbers and copy bigger number sign 7- 3 = 4 Bigger number sign is “ + “ Answer : +4 +7 +3 Numbers have same sign Using Rule 1- Add the numbers and copy bigger number sign 7 + 3 = 10 Bigger number sign is “ + “ Answer : +10
Try these -5 -6 7 -10 -3 +8