Pre-Algebra Examples

$(7.7 \cdot 10^{6}) (7 \cdot 10^{5})$

Step 1

Multiply $7.7$ by $7$ .

$53.9 (10^{6} \cdot 10^{5})$

Step 2

Multiply $10^{6}$ by $10^{5}$ by adding the exponents.

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Step 2.1

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$53.9 \cdot 10^{6 + 5}$

Step 2.2

Add $6$ and $5$ .

$53.9 \cdot 10^{11}$

Step 3

Move the decimal point in $53.9$ to the left by $1$ place and increase the power of $10^{11}$ by $1$ .

$5.39 \cdot 10^{12}$

Step 4

The result can be shown in multiple forms.

Scientific Notation:

$5.39 \cdot 10^{12}$

Expanded Form:

$5390000000000$