What is longmult 128*2 ?

The solution to longmult 128*2 is 256

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longmult 128*2

long multiplication

128 \cdot 2

256

Solution steps

128 \cdot 2

Line up the numbers

\times 1282

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 2 = 16

Carry

1

to the column on the left and write

6

in the result line

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

Add the carried number to the multiplication:

1 + 2 \cdot 2 = 5

\frac{\times 1 1 2 8 2}{5 6}

Mutliply the bold numbers:

1 \cdot 2 = 2

\frac{\times 1 1 2 8 2}{2 5 6}

= 256

15 \cdot 15

0.00001

- (- 2)^{2} + 4

6 - 3 (13 - 2) - 5^{2}

0.45