Becky Afghani LBUSD Addition and Subtraction of Integers
Becky Afghani, LBUSD Addition and Subtraction of Integers on the Number Line – 6 – 5 – 4 – 3 – 2 – 1 0 1 2 3 4 5 Adapted from lessons by Sandi Machit and Judy Rock Slide Show by Becky Afghani & Dixie Dawson 6
Becky Afghani, LBUSD – 6 – 5 – 4 – 3 – 2 – 1 0 1 – 6 – 5 – 4 – 3 – 2 – 1 0 – 6 – 5 – 4 – 3 – 2 – 1 2 1 0 3 4 5 2 1 2 3 4 5 6 6 6
Becky Afghani, LBUSD – 6 – 5 – 4 – 3 – 2 – 1 0 1 – 6 – 5 – 4 – 3 – 2 – 1 0 – 6 – 5 – 4 – 3 – 2 – 1 2 1 0 3 4 5 2 1 2 3 4 5 6 6 6
Becky Afghani, LBUSD – 6 – 5 – 4 – 3 – 2 – 1 0 1 – 6 – 5 – 4 – 3 – 2 – 1 0 – 6 – 5 – 4 – 3 – 2 – 1 2 1 0 3 4 5 2 1 2 3 4 5 6 6 6
Becky Afghani, LBUSD – 6 – 5 – 4 – 3 – 2 – 1 0 1 – 6 – 5 – 4 – 3 – 2 – 1 0 – 6 – 5 – 4 – 3 – 2 – 1 2 1 0 3 4 5 2 1 2 3 4 5 6 6 6
Becky Afghani, LBUSD – 6 – 5 – 4 – 3 – 2 – 1 0 1 2 -2 -8 2 3 4 5 6
Becky Afghani, LBUSD Subtraction – 6 – 5 – 4 – 3 – 2 – 1 0 1 2 3 4 5 6
Becky Afghani, LBUSD What is the opposite of 3? – 6 – 5 – 4 – 3 – 2 – 1 0 -3 1 2 3 4 5 3 units from zero 6
Becky Afghani, LBUSD Subtraction is add the opposite The opposite of 4 is -4 – 6 – 5 – 4 – 3 – 2 – 1 0 1 – 6 – 5 – 4 – 3 – 2 – 1 0 – 6 – 5 – 4 – 3 – 2 – 1 2 1 0 3 4 5 2 1 2 3 4 5 6 6 6
Becky Afghani, LBUSD Subtraction is add the opposite The opposite of 4 is -4 – 6 – 5 – 4 – 3 – 2 – 1 0 1 – 6 – 5 – 4 – 3 – 2 – 1 0 – 6 – 5 – 4 – 3 – 2 – 1 2 1 0 3 4 5 2 1 2 3 4 5 6 6 6
Becky Afghani, LBUSD Subtraction is add the opposite The opposite of -4 is 4 – 6 – 5 – 4 – 3 – 2 – 1 0 1 – 6 – 5 – 4 – 3 – 2 – 1 0 – 6 – 5 – 4 – 3 – 2 – 1 2 1 0 3 4 5 2 1 2 3 4 5 6 6 6
Becky Afghani, LBUSD – 6 – 5 – 4 – 3 – 2 – 1 0 1 2 8 2 -8 3 4 5 6
- Slides: 12
