What is longmult 40*12 ?

The solution to longmult 40*12 is 480

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Multiply 40*12

long multiplication

40 \cdot 12

480

Solution steps

40 \cdot 12

Line up the numbers

\times 4102

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 4102

Mutliply the bold numbers:

0 \cdot 2 = 0

\frac{\times 4 1 0 2}{0}

Mutliply the bold numbers:

4 \cdot 2 = 8

\frac{\times 4 1 0 2}{8 0}

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

\frac{\times 4 1 0 2}{8 0}

Mutliply the bold numbers:

0 \cdot 1 = 0

\frac{\times 4 1 0 2}{8 0 0}

Mutliply the bold numbers:

4 \cdot 1 = 4

\frac{\times 4 1 0 2}{4 8 0 0}

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

\frac{\times 4 1 0 2}{0 4 8 0 0 0}

80 + 400 = 480

+ 048000

Add the digits of the bolded column:

0 + 0 = 0

\frac{+ 0 4 8 0 0 0}{+ 0}

Add the digits of the bolded column:

8 + 0 = 8

\frac{+ 0 4 8 0 0 0}{+ 8 0}

Add the digits of the bolded column:

0 + 4 = 4

\frac{+ 0 4 8 0 0 0}{+ 4 8 0}

= 480

= 480

\frac{20}{6}

\frac{9}{4}

\frac{80}{5}

t o a p erce n t a g e 17/25

\frac{42}{3}