Big Ideas Math: Modeling Real Life, Grade 8
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Big Ideas Math: Modeling Real Life, Grade 8 View details
3. Volumes of Spheres
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Exercise 4 Page 443

Start by factoring out 10^9.

8.5* 10^9

Practice makes perfect
We want to add two numbers that are written in scientific notation. (4.6* 10^9)+(3.9* 10^9) Notice that the exponent of 10 is the same for both numbers. To add the expressions, we can factor out 10^9.
(4.6* 10^9)+(3.9* 10^9)
(4.6+3.9)* 10^9
8.5* 10^9