The Commutative Properties
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
The commutative properties say order does not change sums or products: a + b = b + a; ab = ba.
Show
3 + 7 and 7 + 3 land on 10; 4 · 6 and 6 · 4 land on 24.
Watch for
Subtraction and division do neither: 8 − 3 ≠ 3 − 8.
Builds on
- Nothing — this is a starting point.
Unlocks
- Nothing yet depends on this.