Commutative and distributive law
homework:
Use array diagrams to help you write a good explanation for:
1. Explain why the commutative law works, for the example 6 × 4 =
4 × 6
(your explanation should have an array and some labels and some words
and sentences. Your explanation should not use the fact that 6
× 4 =24)
2. Explain why the distributive law works for the example 3 × 7 =
3 × (5 + 2) = 3 × 5 + 3 × 2
(your explanation should have an array and some labels and some words
and sentences. Your explanation should not use the fact that 3
× 7 =21, 3 × 5 =15, 3 × 2 = 6 or that 15+6=21. It's
find for your explanation to use the fact that 7 = 5 + 2 )
Some useful videos:
Commutative law
Distributive law