Look for compatible numbers to find the exact answer mentally
5x26x4
To find the exact answer to the expression 5x26x4 mentally using compatible numbers, you can follow these steps:
1. Identify the numbers involved: The expression contains three numbers - 5, 26, and 4.
2. Look for compatible numbers: Compatible numbers are numbers that are easy to work with mentally. In this case, we can look for factors or multiples of the numbers involved.
- For 5, compatible numbers could be 2 or 10.
- For 26, compatible numbers could be 25 or 30.
- For 4, compatible numbers could be 2 or 5.
3. Use compatible numbers to simplify the expression:
- Let's choose 5 and 25 as the compatible numbers for 5 and 26. So, we can rewrite the expression as:
(5 x 25) x 4
- Now, we can multiply the compatible numbers mentally:
5 x 25 = 125
- Finally, multiply the result by the remaining number:
125 x 4 = 500
So, using compatible numbers, the exact answer to the expression 5x26x4 is 500.