What is longmult 12*13 ?

The solution to longmult 12*13 is 156

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Multiply 12*13

long multiplication

12 \cdot 13

156

Solution steps

12 \cdot 13

Line up the numbers

\times 1123

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

\times 1123

Mutliply the bold numbers:

2 \cdot 3 = 6

\frac{\times 1 1 2 3}{6}

Mutliply the bold numbers:

1 \cdot 3 = 3

\frac{\times 1 1 2 3}{3 6}

Multiply the top number by the bolded digit of the bottom number

\frac{\times 1 1 2 3}{3 6}

Mutliply the bold numbers:

2 \cdot 1 = 2

\frac{\times 1 1 2 3}{3 2 6}

Mutliply the bold numbers:

1 \cdot 1 = 1

\frac{\times 1 1 2 3}{1 3 2 6}

Add the rows to get the answer. For simplicity, fill in trailing zeros

\frac{\times 1 1 2 3}{0 1 3 2 6 0}

36 + 120 = 156

+ 013260

Add the digits of the bolded column:

6 + 0 = 6

\frac{+ 0 1 3 2 6 0}{+ 6}

Add the digits of the bolded column:

3 + 2 = 5

\frac{+ 0 1 3 2 6 0}{+ 5 6}

Add the digits of the bolded column:

0 + 1 = 1

\frac{+ 0 1 3 2 6 0}{+ 1 5 6}

= 156

= 156

\frac{20}{7}

24 \cdot 60

\frac{41}{12}

t o a p erce n t a g e 14/25

\frac{120}{3}