What is 30 * 40?
What is 30 * 40?
Approach: 3 * 4 and two zeros.
1200. 12 + 00 = 1200.
Follow-up: What is 30 * 400?
Key concepts: multiplication.
What is 30 * 40?
Approach: 3 * 4 and two zeros.
1200. 12 + 00 = 1200.
Follow-up: What is 30 * 400?
Key concepts: multiplication.