ADDING REAL NUMBERS Section 2 2 Algebra tiles

ADDING REAL NUMBERS Section 2. 2

Algebra tiles can be used to add or subtract integers. Remember integers are .

Example 1: Use algebra tiles to represent = =

zero Neutral pairs have a value of _____. = 0

Example 2: A. Use algebra tiles to represent and then cross out any neutral pairs. + = =

B. Use algebra tiles to represent and then cross out any neutral pairs. = =

C. Use algebra tiles to represent and then cross out any neutral pairs.

D. Use algebra tiles to represent and then cross out any neutral pairs. =

E. Use algebra tiles to represent and then cross out any neutral pairs. 1 3 2 4 5 There are no neutral pairs =

F. Use algebra tiles to represent and then cross out any neutral pairs. = There are no neutral pairs

Rules For Adding Two Signed Numbers: A. Signs are the same – Add the numbers 1. ___________________ Take the given sign 2. ___________________ B. Signs are the different – the numbers 1. Subtract ___________________ Take the sign of the larger number 2. ___________________

Example 3: Find each sum. B. A. Signs are the same Try these… A. C. Signs are different Find each sum. B. C.

Example 4: Find each sum. B. A. 1. 2 C. D. -12. 3

Try these… Find each sum. A. B. C. D.