Practice arithmetic questions about addition, subtraction, multiplication, division, fractions, decimals, percentages, and order of operations. Use hints when needed, choose an answer, and review the explanation after each question.
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These 10 questions review whole-number operations, percentages, decimals, fractions, order of operations, least common multiples, and rounding. The calculations are short, but the habits behind them are the same ones used later in algebra, geometry, statistics, and exam-style problems.
Add, subtract, multiply, and divide without losing place value or the meaning of the operation.
Recognize equivalent representations such as 25%, 1/4, and 0.25 when that makes a calculation easier.
Interpret an expression in the correct sequence instead of simply calculating from left to right.
Estimate, round, and compare the result with what you expected before accepting an exact answer.
Before multiplying awkward values, round them enough to predict the size of the answer. Then compare the exact result with that prediction.
39.8 is close to 40 and 5.1 is close to 5, so the product should be near 200.
39.8 × 5.1 = 202.98.
202.98 is close to 200, so the decimal placement and magnitude are reasonable.
The quiz uses a simple percentage question. In high school problems, percentages often occur in sequence, so each change must be applied to the current value rather than the original one.
One of the strongest arithmetic habits is switching between fractions, decimals, and percentages when the new representation makes the next step simpler.
Suppose a jacket costs $160, is discounted by 15%, and then an 8% sales tax is applied to the discounted price. Each individual calculation is basic; the challenge is organizing the sequence correctly.
Original price: $160
Discount: 15%
Sales tax: 8%
Find the final price.
The quiz includes 6 + 4 × 3. Multiplication is completed before the final addition.
Parentheses can deliberately change which part of an expression must be evaluated first.
The same rule later applies inside expressions containing variables, powers, fractions, and functions.
A product or sum can be numerically close in digits but wrong by a factor of 10 or 100.
Repeated discounts, markups, or taxes may apply to different intermediate values.
Premature rounding can introduce unnecessary error into later steps.
Review basic operations, fraction/decimal meaning, percentage of a quantity, and order of operations.
Identify whether the misses came from calculation accuracy, representation changes, or operation order.
Move toward ratios, repeated percentage change, multi-step word problems, rates, averages, and algebraic arithmetic.