Add/Subtract Scientific Notation

CONCEPTS

Add / Subtract terms

• The exponents must be the same

• Add the base terms and keep the exponent terms the same

EXAMPLES

• a x 10³ + b x 10³ = (a + b) x 10³

PRACTICE PROBLEMS

Question 1 Add 6.3 x 10³ + 7.2 x 10²

-- Answer -- 7.02 x 10³

Make the bases the same => 0.72 x 10³ + 6.3 x 10³ = 7.02 x 10³

ACT PRACTICE PROBLEMS