How can I use mental math to multiply 800x5
First do 8 x 5 in your head = 40
Then add the other two zeros from the 800 = 4000
:)
To multiply 800 by 5 using mental math, you can use a technique known as the distributive property. Here's how to do it step by step:
1. Break down 800 into smaller, more manageable numbers that are easier to work with mentally. In this case, you can split 800 into 8 hundreds (800 = 8 x 100).
2. Multiply the smaller numbers separately. 8 x 5 = 40.
3. Multiply the result from step 2 (40) by the hundreds in the original number. Since we had 8 hundreds, multiply 40 by 8: 40 x 8 = 320.
Therefore, 800 x 5 equals 3200.
By breaking down the larger number into smaller components and using smaller multiplications, you can make mental math calculations more manageable and easier to solve.