1. copyright©amberpasillas2010

2. 0.6 – (- 0.34) 4 Step 2: Line up the decimals 0.6 + 0.34 Step 3: If needed, put zeros in as place holders Step 4: Add decimals Step 5: Bring decimal down. 90 Step 1: Use shortcuts for negatives. 0

3. copyright©amberpasillas2010 Step 2: Line up the decimals Step 3: If needed, put zeros in as place holders Step 4: Add decimals Step 5: Bring decimal down Step 1: Use shortcuts for negatives. 4.38 + 0.9213 00 3 1 0 1 3 1 5. -4.38 + -0.9213 -5.3013 The answer is NEGATIVE – + – = – The signs are same so take the SUM ! Step 6: Determine the sign of the answer

4. copyright©amberpasillas2010 – 0.67 + 0.53 The signs are different so take the DIFFERENCE! 4 Step 1: Line up the decimals 0.67 – 0.53 Step 2: If needed, put zeros in as place holders Step 3: Subtract decimals Step 4: Bring decimal down. 10- The answer is negative because you started with MORE NEGATIVES! Step 5: Determine the sign of the answer

5. copyright©amberpasillas2010 Step 1: Line up the decimals Step 2: If needed, put zeros in as place holders Step 3: Subtract decimals Step 4: Bring decimal down Step 5: Determine the sign of the answer 5.39 – 1.231 0 8 1 9514. -5.39 + 1.231 - The signs are different so take the DIFFERENCE! The answer is negative because you started with MORE NEGATIVES!

6. copyright©amberpasillas2010 Try the following problem on your own! 6.27 + 0.8534 00 43 2 1 1 1 7. -6.27 + -0.8534 The signs are the same so take the SUM! -7.1234 The answer is negative – + – = –

7. copyright©amberpasillas2010 Try the following problem on your own! 8.27 – 5.342 0 6 1 8292. -8.27 + 5.342 -2.928 The signs are different so take the DIFFERENCE! The answer is negative because you started with MORE NEGATIVES! 7 1

8. copyright©amberpasillas2010 Take out your study guide !!! THAT’S ALL FOLKS! The End!

9. copyright©amberpasillas2010 6.27 + 0.8534 00 43 2 1 1 1 7. -6.27 + -0.8534 The signs are the same so take the SUM ! -7.1234 The answer is NEGATIVE – + – = – #4 #4 8.27 – 5.342 0 6 1 8292. -8.27 + 5.342 -2.928 The signs are different so take the DIFFERENCE ! The answer is negative because you started with MORE NEGATIVES ! 7 1