Explain how you can use mental math to solve 30 x 80?
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To solve 30 x 80 using mental math, you can break down the problem into smaller, more manageable calculations. Here's how you can do it:
1. Start by recognizing that 30 is close to 10 x 3 and 80 is close to 10 x 8.
2. Multiply 10 x 3 mentally to get 30.
3. Multiply 10 x 8 mentally to get 80.
4. Now, multiply the results together: 30 x 80 is equal to (10 x 3) x (10 x 8).
5. Using the commutative property of multiplication, you can rearrange the equation to be (10 x 10) x (3 x 8).
6. Continue the calculations: 10 x 10 equals 100, and 3 x 8 equals 24.
7. Multiply 100 x 24 mentally to get your final answer.
8. The result is 2,400.
So, using mental math, you can solve 30 x 80 by breaking it down into simpler calculations and then combining the results to obtain the final answer.