Warmup Drills
Know these cold. Drill until instant.
×
Times Tables
2 × 2 through 15 × 15
105 cards
²
Squares
1² through 30²
30 cards
³
Cubes
1³ through 12³
12 cards
2ⁿ
Powers of 2
2¹ through 2²⁰
20 cards
½
Fractions
Key fractions → decimals
29 cards
π
Constants
Math & finance constants
20 cards
Σ
Series Sums
Triangular, square, cube sums
42 cards
Xⁿ
Last Digit
Last digit of n^k via cycles
49 cards
Cₙₖ
C(n,k)
Combinations via Pascal's triangle
24 cards
×25
Quick ×
×9 ×11 ×15 ×25 ×99 + 2-digit squaring
84 cards
Shortcuts & Guides
Mental math tricks and formulas