What is longmult 128*4 ?

The solution to longmult 128*4 is 512

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Multiply 128*4

long multiplication

128 \cdot 4

512

Solution steps

128 \cdot 4

Line up the numbers

\times 1284

Multiply the top number by the bottom number one digit at a time starting with the ones digit (from right to left)

Mutliply the bold numbers:

8 \cdot 4 = 32

Carry

3

to the column on the left and write

2

in the result line

\frac{\times 1 3 2 8 4}{2}

Add the carried number to the multiplication:

3 + 2 \cdot 4 = 11

Carry

1

to the column on the left and write

1

in the result line

\frac{\times 1 1 3 2 8 4}{1 2}

Add the carried number to the multiplication:

1 + 1 \cdot 4 = 5

\frac{\times 1 1 3 2 8 4}{5 1 2}

= 512

- 4.5

\frac{7}{8}

t o a p erce n t a g e 3.7

5462.263

100 - 71