What is longmult 12*25 ?

The solution to longmult 12*25 is 300

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12*25

long multiplication

12 \cdot 25

300

Solution steps

12 \cdot 25

Line up the numbers

\times 1225

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 1225

Mutliply the bold numbers:

2 \cdot 5 = 10

Carry

1

to the column on the left and write

0

in the result line

\frac{\times 1 1 2 2 5}{0}

Add the carried number to the multiplication:

1 + 1 \cdot 5 = 6

\frac{\times 1 1 2 2 5}{6 0}

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

\frac{\times 1 2 2 5}{6 0}

Mutliply the bold numbers:

2 \cdot 2 = 4

\frac{\times 1 2 2 5}{6 4 0}

Mutliply the bold numbers:

1 \cdot 2 = 2

\frac{\times 1 2 2 5}{2 6 4 0}

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

\frac{\times 1 2 2 5}{0 2 6 4 0 0}

60 + 240 = 300

+ 026400

Add the digits of the bolded column:

0 + 0 = 0

\frac{+ 0 2 6 4 0 0}{+ 0}

Add the digits of the bolded column:

6 + 4 = 10

\frac{+ 0 2 6 4 0 0}{+ 0}

Carry

1

to the column on the left and write

0

in the bolded column

\frac{+ 1 0 2 6 4 0 0}{+ 0 0}

Add the digits of the bolded column:

1 + 0 + 2 = 3

\frac{+ 1 0 2 6 4 0 0}{+ 3 0 0}

= 300

= 300

8, 16, 32

\frac{77}{6}

t o a p erce n t a g e 13/9

180 - 61

294