Percents Fractions and Decimals (PFD) – Rational Numbers and Proportional Reasoning
The Happy Birthday Song is a good way to learn and remember to use common denominators. (I'm still fixing the graphics and the Word file...)
"Happy Birthday Song"
Verse 1
You must have common denominators,
You must have common denominators,
To add or subtr-act,
You must have common denominators.Verse 2
You must have like units,
You must have like units,
To add or subtr-act,
You must have like units.Verse 3
You must have like terms,
You must have like terms,
To add or subtr-act,
You must have like terms.Verse 4
You must have like radicals,
You must have like radicals,
To add or subtr-act,
You must have like radicals.
Back to the Math Fundamentals Home Page
James R. Olsen, Ph.D. ~ Western Illinois University
URL: www.wiu.edu/users/mfjro1/wiu/MathFundamentals/fractions/fractions.htm
updated:
September 28, 2022