What is longmult 40*20 ?

The solution to longmult 40*20 is 800

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longmult 40*20

long multiplication

40 \cdot 20

800

Solution steps

40 \cdot 20

Line up the numbers

\times 4200

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 4200

Mutliply the bold numbers:

0 \cdot 0 = 0

\frac{\times 4 2 0 0}{0}

Mutliply the bold numbers:

4 \cdot 0 = 0

\frac{\times 4 2 0 0}{0 0}

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

\frac{\times 4 2 0 0}{0 0}

Mutliply the bold numbers:

0 \cdot 2 = 0

\frac{\times 4 2 0 0}{0 0 0}

Mutliply the bold numbers:

4 \cdot 2 = 8

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

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

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

0 + 800 = 800

+ 080000

Add the digits of the bolded column:

0 + 0 = 0

\frac{+ 0 8 0 0 0 0}{+ 0}

Add the digits of the bolded column:

0 + 0 = 0

\frac{+ 0 8 0 0 0 0}{+ 0 0}

Add the digits of the bolded column:

0 + 8 = 8

\frac{+ 0 8 0 0 0 0}{+ 8 0 0}

= 800

= 800

3^{3} - 15 \cdot 5

\frac{0.1}{2}

0.0001

8 + (- 25) + 16 - (- 25) - 16

8 - (- 10 + 8)^{2}