Top 10 PSAT 8/9 Math Prep Books (Our 2026 Favorite Picks)
Please keep in mind that pricing and availability are accurate at the time, but may fluctuate. Best PSAT 8/9 Prep Books in 2026 1-PSAT 8/9 Math for Beginners: The Ultimate Step-by-Step Guide to Preparing for the PSAT 8/9 Math Test Our first choice for all students at any level is the PSAT 8/9 Math for […]
The Ultimate PSAT 8/9 Math Formula Cheat Sheet
br />\(\frac{a}{b}-\frac{c}{d}=\frac{ad-cb}{bd}\)Multiplying and Dividing Fractions:\(\frac{a}{b} × \frac{c}{d}=\frac{a×c}{b×d}\)\(\frac{a}{b} ÷ \frac{c}{d}=\frac{\frac{a}{b}}{\frac{c}{d}}=\frac{ad}{bc}\) Decimals Is a fraction written in a special form? For example, instead of writing \(\frac{1}{2}\) you can write \(0.5\). Mixed Numbers A number is composed of a whole number and a fraction. Example: \(2 \frac{2}{ 3}\) Converting between improper fractions and mixed numbers: \(a \frac{c}{b}=a+\frac{c}{b}= \frac{ab+ […]
