Step 1: Write both numbers in scientific notation. For more information, use the SN Converter.

$$ 2\cdot 10^{20} = 2\cdot 10^{20} $$$$ 5\cdot 10^{50} = 5\cdot 10^{50} $$

Step 2: Multiply the numeric parts.

$$ 2 \cdot 5 \approx 10 $$

Step 3: Multiply $10^{ 20 }$ by $10^{ 50 }$:

$$ 10^{ 20 } \cdot 10^{ 50 } = 10^{ 20+50 } = 10^{ 70 } $$

Step 4: Write the solution as the product of the numbers obtained in steps two and three.

$$ 10 \cdot 10^{ 70 } $$

Step 5: Number 10 is larger than 10.
To fix this, we need to move the decimal point one place to the left and add 1 to the exponent.

$$ 1.0 \cdot 10^{ 71 } $$

Scientific notation Calculator