What is longmult 18*15 ?

The solution to longmult 18*15 is 270

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

Multiply 18*15

long multiplication

18 \cdot 15

270

Solution steps

18 \cdot 15

Line up the numbers

\times 1185

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 1185

Mutliply the bold numbers:

8 \cdot 5 = 40

Carry

4

to the column on the left and write

0

in the result line

\frac{\times 4 1 1 8 5}{0}

Add the carried number to the multiplication:

4 + 1 \cdot 5 = 9

\frac{\times 4 1 1 8 5}{9 0}

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

\frac{\times 1 1 8 5}{9 0}

Mutliply the bold numbers:

8 \cdot 1 = 8

\frac{\times 1 1 8 5}{9 8 0}

Mutliply the bold numbers:

1 \cdot 1 = 1

\frac{\times 1 1 8 5}{1 9 8 0}

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

\frac{\times 1 1 8 5}{0 1 9 8 0 0}

90 + 180 = 270

+ 019800

Add the digits of the bolded column:

0 + 0 = 0

\frac{+ 0 1 9 8 0 0}{+ 0}

Add the digits of the bolded column:

9 + 8 = 17

\frac{+ 0 1 9 8 0 0}{+ 0}

Carry

1

to the column on the left and write

7

in the bolded column

\frac{+ 1 0 1 9 8 0 0}{+ 7 0}

Add the digits of the bolded column:

1 + 0 + 1 = 2

\frac{+ 1 0 1 9 8 0 0}{+ 2 7 0}

= 270

= 270

252

t o a p erce n t a g e 13/40

t h e \frac{78}{12}

180 - 145

t o a p erce n t a g e 0.25