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ISEE (Independent School Entrance Examination) Quantitative Reasoning Flashcards
71 question-and-answer cards covering Quantitative Reasoning as it is examined in ISEE (Independent School Entrance Examination). 24 of them are printed below, taken from across the deck — no signup, no paywall on the preview.
24 sample cards from the Quantitative Reasoning deck
Sampled from the end of the deck, so these are different cards from the ones shown on the syllabus page.
What is the basic formula for the probability of an event?
Probability = number of favorable outcomes divided by total number of possible outcomes.
What is the probability of rolling a 3 on one standard six-sided die?
1/6 (one favorable outcome out of six equally likely outcomes).
What range of values can a probability take, and what do 0 and 1 mean?
Probability ranges from 0 to 1; 0 means impossible and 1 means certain.
How do you find the probability that an event does NOT happen?
Subtract the probability that it does happen from 1 (the complement rule).
A bag has 3 red and 5 blue marbles. What is the probability of drawing a red marble?
3/8 (3 red out of 8 total marbles).
When drawing conclusions from a data set, why is it important to read titles, labels, and units first?
They tell you what the data measures and in what units, preventing misinterpretation of the numbers.
What is the danger of drawing a conclusion that goes beyond what the data shows?
Data only supports claims it directly measures; assuming causes or future results not shown leads to invalid conclusions.
What is a quick way to round a number to a given place value?
Look at the digit just to the right of that place: round up if it is 5 or more, keep the same if it is 4 or less.
Round 3,847 to the nearest hundred.
3,800 (the tens digit 4 is less than 5, so the hundreds digit stays).
Why use estimation/approximation before computing an exact answer?
It gives a quick ballpark to check that the exact answer is reasonable and to eliminate impossible answer choices.
To estimate 48 x 21 quickly, what should you do?
Round to 50 x 20 = 1,000, giving a close estimate of the product.
What does it mean to check the 'reasonableness' of an answer?
Judging whether the answer makes sense in size and context—e.g., a person's age shouldn't be 200, or a discount price shouldn't exceed the original.
If a question asks for a discounted price and your answer is higher than the original, what does that tell you?
The answer is unreasonable; you likely added instead of subtracting and should recheck.
What is a mental-math trick for multiplying a number by 10, 100, or 1000?
Move the decimal point right by 1, 2, or 3 places (or append that many zeros to a whole number).
What is a fast mental-math way to find 10% of a number?
Move the decimal point one place to the left.
How can you quickly find 5% of a number using mental math?
Find 10% (move decimal left one place) and then take half of that.
What mental-math strategy helps multiply 25 x 16?
Use 25 = 100/4: 100 x 16 = 1600, then divide by 4 = 400.
How can rearranging addends speed up adding 17 + 25 + 3?
Group friendly pairs: 17 + 3 = 20, then 20 + 25 = 45.
What is the difference between the mean and the median as 'averages'?
The mean is the arithmetic average of all values; the median is the middle value. The median is less affected by extreme outliers.
Why can an outlier make the mean misleading?
A very large or very small value pulls the mean toward it, so the median may better represent a typical value.
On a double bar graph, how do you compare two groups for one category?
Compare the heights of the two side-by-side bars within that category against the value axis.
How do you translate 'the quotient of a number and 4 increased by 9' into an expression?
n/4 + 9.
What should you do when two pie chart percentages are given but you need a count?
Convert each percentage to a decimal and multiply by the total, then compare or combine the resulting counts.
In a quantitative comparison where Column A = the average of 10 and 20 and Column B = 15, what is the answer?
They are equal (C); the average of 10 and 20 is 15.
What this deck covers
The Quantitative Reasoning deck follows the ISEE (Independent School Entrance Examination) Quantitative Reasoning syllabus — 4 chapters and 15 topics — so questions land on material that is genuinely examinable rather than trivia around it. That works out to roughly 17.8 cards per chapter.
Answers are written to be recallable, not just readable — averaging about 82 characters, which is long enough to carry the reasoning and short enough to say out loud.
A deck like this earns its keep on the second and third pass. Read the syllabus first so you know the shape of the subject, then use the cards to find the specific facts that have not stuck.
Quantitative Reasoning flashcards FAQ
How many Quantitative Reasoning flashcards are in this ISEE (Independent School Entrance Examination) deck?
71 cards. This page previews 24 of them, sampled evenly across the deck so you can judge the difficulty before installing anything.
Are these ISEE (Independent School Entrance Examination) flashcards free?
Yes. The preview here is free to read with no signup, and the full 71-card deck is free inside the Examius app.
What do the Quantitative Reasoning cards cover?
They follow the ISEE (Independent School Entrance Examination) Quantitative Reasoning syllabus — 4 chapters and 15 topics — so the questions track what is actually examinable.
How should I use these flashcards?
Read the syllabus first so you know the shape of the subject, then drill the deck. Examius schedules each card with spaced repetition, so cards you keep missing come back sooner and ones you know drift further apart.