What is longmult 42*42 ?

The solution to longmult 42*42 is 1764

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Popular >

Multiply 42*42

Solution

long multiplication

42 \cdot 42

Solution

1764

Solution steps

42 \cdot 42

Line up the numbers

\times 4422

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 4422

Mutliply the bold numbers:

2 \cdot 2 = 4

\frac{\times 4 4 2 2}{4}

Mutliply the bold numbers:

4 \cdot 2 = 8

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

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

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

Mutliply the bold numbers:

2 \cdot 4 = 8

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

Mutliply the bold numbers:

4 \cdot 4 = 16

Carry

1

to the column on the left and write

6

in the result line

\frac{\times 1 4 4 2 2}{6 8 8 4}

Add the carried digit,

1

, to the result

\frac{\times 1 4 4 2 2}{1 6 8 8 4}

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

\frac{\times 4 4 2 2}{0 1 0 6 8 8 4 0}

84 + 1680 = 1764

+ 01068840

Add the digits of the bolded column:

4 + 0 = 4

\frac{+ 0 1 0 6 8 8 4 0}{+ 4}

Add the digits of the bolded column:

8 + 8 = 16

\frac{+ 0 1 0 6 8 8 4 0}{+ 4}

Carry

1

to the column on the left and write

6

in the bolded column

\frac{+ 0 1 1 0 6 8 8 4 0}{+ 6 4}

Add the digits of the bolded column:

1 + 0 + 6 = 7

\frac{+ 0 1 1 0 6 8 8 4 0}{+ 7 6 4}

Add the digits of the bolded column:

0 + 1 = 1

\frac{+ 0 1 1 0 6 8 8 4 0}{+ 1 7 6 4}

= 1764

= 1764

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Frequently Asked Questions (FAQ)

What is longmult 42*42 ?
The solution to longmult 42*42 is 1764