10 lessons bridging Arithmetic and Algebra — from variables and expressions to factors, primes, and the GCF/LCM — each with theory, worked examples, practice questions, and a downloadable worksheet.
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A variable is a letter that stands in for a number we don't know yet, or a numbe...
An expression combines numbers, variables, and operations — but unlike an equati...
Order of operations is the agreed-upon set of rules for which calculation to do ...
An exponent tells you how many times to multiply a number by itself — a compact ...
Integers extend our number system to include negative numbers — essential for re...
Absolute value measures how far a number is from zero on the number line, regard...
Factors and multiples describe two related but opposite ideas — what divides eve...
A prime number can only be divided evenly by 1 and itself — these special number...
The greatest common factor (GCF) is the largest number that divides two or more ...
The least common multiple (LCM) is the smallest number that two or more numbers ...
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