Embed Size (px)
DESCRIPTION
Add and Subtract. Negative Decimals. Add and Subtract Decimals. 0.6 – (- 0.34). Step 1: Use shortcuts for negatives. 0. 0.6 + 0.34. Step 2: Line up the decimals. Step 3: If needed, put zeros in as place holders. 4. 0. 9. Step 4: Add decimals. Step 5: Bring decimal down. - PowerPoint PPT Presentation
Citation preview
copyright©amberpasillas2010
copyright©amberpasillas2010
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
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
copyright©amberpasillas2010
– 0.67 + 0.53The 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
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
08
1
9514.
-5.39 + 1.231
-
The signs are different so take the DIFFERENCE!
The answer is negative because you started with MORE NEGATIVES!
copyright©amberpasillas2010
Try the following problem on your own!
6.27
+ 0.853400
43 2
1
1
1
7 .
-6.27 + -0.8534The signs are the same so take the SUM!
-7.1234
The answer is negative – + – = –
copyright©amberpasillas2010
Try the following problem on your own!
8.27 – 5.342
06
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
copyright©amberpasillas2010
Take out your study guide!!!
THAT’S ALL FOLKS!THAT’S ALL FOLKS!
The End!
copyright©amberpasillas2010
6.27
+ 0.853400
43 2
1
1
1
7 .
-6.27 + -0.8534The signs are the same so take the SUM!
-7.1234
The answer is NEGATIVE – + – = –
#4#4
8.27 – 5.342
06
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
