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Prepdle

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Plug in concrete numbersTactic

Tactic

Plug in concrete numbers

Swap letters for numbers, then match the choice

10 min 6 stepsGraded practice at the end

Letters can hide a mistake; numbers can't. Plug one in and the wrong choices give themselves away, a lot like I used to.

Meet it
Spot it
Run it
Dodge the traps
Play with it
Prove it

The first step is free. A free account opens the rest.

Calls on

SubstituteTechniqueSwap in the value, parentheses and all
Exponent and radical rulesTechniqueRewrite everything as one base to one power

Used by

Choose a routeHabitPick the fastest route first; switch when it stalls

Other routes

Rearrange a literal equationTacticSolve for one letter as if the rest were numbers
Rewrite into an equivalent formTacticAim for the choices' form, then check with a number
Find constants from an identityTacticMatch every power of x and the constants fall out