Arithmetic & Basic Operations

Master the universal rule for evaluating any arithmetic expression. One mistake here kills 3-5 points on every GAT-E test.

Add, compare, and simplify fractions, and convert fluently between fractions and decimals — the backbone of half the quantitative section.

Percent of a number, percent change, and reverse-percent problems — one of the most frequently tested ideas on the GAT-E.

The sign rules for adding, subtracting, and multiplying positives and negatives — a quiet source of avoidable errors.

Prime factorization and the GCF/LCM toolkit that powers fraction, ratio, and number-property questions.

Recognize perfect squares and cubes, simplify square roots, and read scientific notation at a glance.

Round to convenient numbers to eliminate wrong answers fast — a core no-calculator skill.

Translate everyday English into arithmetic and choose the right operation with confidence.

Read absolute value as distance from zero, and use it to handle "either sign" situations.

Compute profit/loss percentages on cost price and simple interest with one clean formula each.

Use parity rules and the algebra of consecutive integers to solve number-property puzzles fast.

Work with remainders directly and use cyclic patterns to answer "what is left over" questions.