Question

ADDING AND SUBTRACTING IN SCIENTIFIC NOTATION

Find the sum or difference. Write your answer in scientific notation.

$(2\times {10}^5)+(3.8\times {10}^5)$

Answer 1

Step 1. To solve the given expression, first apply distributive property over multiplication.

$=$$(2\times {10}^5)+(3.8\times {10}^5)$

$=$${10}^5\times (2+3.8)$

Step 2. Now adding the digits in bracket

$=$${10}^5\times (5.8)$

Writing the result in scientific notation

$=$$5.8\times {10}^5$