23x17 in expanded algorithm

The School Subject is not 4th grade. Perhaps Math?

Sra

319

just expand and multiply

To find the product of 23 and 17 using the expanded algorithm, you can follow these steps:

Step 1: Write down the two numbers you want to multiply, 23 and 17, vertically aligned.

23
x 17

Step 2: Starting from the right, multiply the ones digit of the bottom number (7) by each digit in the top number, one at a time. Write down the intermediate products below the line, each shifted one position to the left for every successive digit in the top number.

23
x 17
-----
21 (7 multiplied by 3)
+140 (7 multiplied by 2, shifted one place to the left)
------
391

Step 3: Add up all the intermediate products to get the final answer.

23
x 17
-----
391

Therefore, the product of 23 and 17 using the expanded algorithm is 391.