Question

ADDING AND SUBTRACTING IN SCIENTIFIC NOTATION

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

$(9.2\times {10}^8)–(4\times {10}^8)$

Answer 1

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

$=$$(9.2\times {10}^8)–(4\times {10}^8)$

$=$${10}^8\times (9.2–4)$

Step 2. Now subtracting the digits in bracket

$=$${10}^8\times (5.2)$

Writing the result in scientific notation

$=$$5.2\times {10}^8$