Show that addition of two numbers can be done in any order (commutative) and subtraction of one number from another cannot
| 1. | 12 + 7 = 19 - so what else is true? | |
| 2. | Enid the Elephant's Equations - equivalent to 8 + 4 | |
| 3. | Enid the Elephant's Equations - equivalent to 6 + 5 | |
| 4. | Enid the Elephant's Equations - equivalent to 7 + 7 |