Solution

long multiplication

Solution

Solution steps
Line up the numbers
Multiply the top number by the bottom number one digit at a time starting with the ones digit (from right to left)
Multiply the top number by the bolded digit of the bottom number
Mutliply the bold numbers:
Mutliply the bold numbers:
Multiply the top number by the bolded digit of the bottom number
Mutliply the bold numbers:
Mutliply the bold numbers:
Add the rows to get the answer. For simplicity, fill in trailing zeros
Add the digits of the bolded column:
Add the digits of the bolded column:
Add the digits of the bolded column:

Popular Examples

8/2 ((2+2))longmult 120*4long multiplication 2(0)^2-23(4-7)-11-2+{-3-[7+4(-2+5)]}-4

Frequently Asked Questions (FAQ)

  • What is longmult 21*21 ?

    The solution to longmult 21*21 is 441