Question

Work out (5x10^3)x(9x10^7) give your answer in standard form

Answer 1

Step-by-step explanation:

(5×10³) × (9×10^7)

= 45 × 10^10

= 4.5 × 10¹¹

Answer 2

$\sf (5 \times {10}^{3} ) \times (9 \times {10}^{7} ) = 4.5 \times {10}^{11}$

Given : $\sf (5 \times {10}^{3} ) \times (9 \times {10}^{7} )$

To find : The standard form

Solution :

Step 1 of 2 :

Write down the given expression

The given expression is

$\sf (5 \times {10}^{3} ) \times (9 \times {10}^{7} )$

Step 2 of 2 :

Find the value in standard form

$\sf (5 \times {10}^{3} ) \times (9 \times {10}^{7} )$

$\sf =5 \times 9 \times {10}^{3 + 7}$

$\sf =45 \times {10}^{10}$

$\sf =4.5 \times 10 \times {10}^{10}$

$\sf =4.5 \times {10}^{11}$

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