long mulipulcation
345
x 5
----
I never learned how to do " mulipulcation"
http://www.scriblink.com/index.jsp?act=phome&ld=1&rid=5044&cid=6393
345 = 3*100 + 4*10 + 5
times 5
= 15*100 + 20*10 + 5*5
= 1500 + 200 + 25
= 1725
To perform long multiplication, you'll need to follow a step-by-step process. Let's multiply 345 by 5 as an example:
Step 1: Start by multiplying the ones digit of 345 (which is 5) by 5:
5
x 5
----
25
Step 2: Now, move on to the tens digit of 345 (which is 4) and multiply it by 5:
5
x 5
----
25
+ 20
Step 3: Lastly, multiply the hundreds digit of 345 (which is 3) by 5:
5
x 5
----
25
+ 20
+150
Step 4: Add up the results from the previous steps to get the final answer:
5
x 5
----
25
+ 20
+150
-----
1,725
Therefore, 345 multiplied by 5 equals 1,725.