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Copyright © Swun MathCopyright © Swun Math (^) Grade 8 Unit 3 Lesson 7 P TE

Homework

Unit 3 · Lesson 7: Scientific Notation:
Mixed Practice

Example # 1 Example # 2

Directions: Simplify the expression. Write solution in scientific notation.

(3.6 × 10^9 ) + (0.7 × 10^10 )

Solution:

• We need to change (0.7 × 10^10 ) into the correct form of
  scientific notation (7 × 10^9 )


• (3.6 × 10^9 ) + (7 × 10^9 )


• (3.6 + 7) × 10^9


• 10.6 × 10^9 Rewrite in the correct form of scientific
  notation.


• 1.06 × 10^10
  Answer: 1.06 × 10^10

(1.3 × 10^1 ) × (1.2 × 10^10 )

Solution:

• (1.3 × 1.2) × (10^1 × 10^10 )


• 1.56 × 101 + 10


• 1.56 × 10^11
  Answer: 1.56 × 10^11