The distributive property means you can multiply a number across a sum — 3 × (4 + 2) is the same as 3 groups of 4 plus 3 groups of 2. So this lesson runs on multiplication facts, adding inside parentheses, and seeing arrays as groups. Warm those up first.
These are words you'll need to already know to follow this lesson — not the new words the lesson teaches. Review each one, its meaning, and the example so the new lesson makes sense from the start.
Level 1 To add the same number many times to find a total.
Example: 3 × 4 = 12.
Level 1 Curved marks ( ) that group numbers. Do what is inside them first.
Example: In 3 × (4 + 2), add inside first: 4 + 2 = 6.
Level 1 Objects set out in equal rows and columns.
Example: 2 rows of 5 dots is 2 × 5 = 10 dots.
Level 1 The answer when you add.
Example: The sum of 4 and 2 is 6.
These check the skills you'll need for this lesson — not the new lesson itself. Answer all 3, then press Show my path. No grade — it just suggests where to start.
1. What is 4 + 2 first, then 3 × that? (3 × (4 + 2))
2. What is 3 × 4?
3. A row of 5 dots, with 2 rows. How many dots?
Vocabulary previewed and basics checked. Time to start the lesson.
Start Lesson 6-5 →