What is 90 x 5

What is 90 x 5???

The Correct Answer and Explanation is:

The correct answer to (90 \times 5) is 450.

Explanation:

To understand how to calculate (90 \times 5), it’s helpful to break the process down step-by-step:

1. Multiplication Basics:
   Multiplication is a mathematical operation that represents repeated addition. When you multiply a number by another, you’re essentially adding that number repeatedly a certain number of times. In this case, multiplying 90 by 5 means you’re adding 90 five times. [
   90 \times 5 = 90 + 90 + 90 + 90 + 90
   ] This can be calculated as follows: [
   90 + 90 = 180
   ]
   [
   180 + 90 = 270
   ]
   [
   270 + 90 = 360
   ]
   [
   360 + 90 = 450
   ]
2. Using Place Value:
   Another approach to multiplication is to use place value, breaking down 90 into (90 = 9 \times 10). We can now multiply: [
   90 \times 5 = (9 \times 10) \times 5 = 9 \times (10 \times 5)
   ] First, calculate (10 \times 5), which is 50, then multiply: [
   9 \times 50 = 450
   ] This gives the same result.
3. Mental Math Strategy:
   To make this even simpler, you could round 90 to 100 (which is easier to multiply) and then subtract the extra amount: [
   100 \times 5 = 500
   ]
   Since we multiplied by 100 instead of 90, we need to subtract the extra (10 \times 5 = 50): [
   500 – 50 = 450
   ] This shows how using estimation can be helpful in checking our work.
4. Final Result:
   Regardless of the method used, the correct result of (90 \times 5) is 450. This demonstrates a solid understanding of multiplication and how it can be broken down into manageable steps.