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12 multiple-choice questions and 44 flashcards on Understanding Ratios, about 8% of the 6th Math: Ratios & Proportional Relationships bank. Every one carries a written rationale.
Understanding Ratios is one of 5 chapters in CoStudy's 6th Math: Ratios & Proportional Relationships bank, and it holds 12 of the bank's 150 multiple-choice questions — roughly 8% of the total. That proportion is not arbitrary: chapters follow the certifying body's published exam outline, and the number of questions in each is set by that domain's published weight, so the share of your practice time this chapter takes matches the share of the real exam it accounts for.
Studying by chapter is worth doing once you have a diagnostic score. A single overall percentage tells you whether you are close; it does not tell you which domain is dragging. Working a weak chapter in isolation, and re-testing it in isolation, is the fastest way to move a score that has stalled — and it is why the mock exams in CoStudy report by domain rather than as one number.
3 questions drawn from this chapter, with the full rationale shown — the controlling principle behind the right answer, and why each wrong option tempts and fails.
Which ratio is equivalent to 3:5?
Answer: A — 6:10
A) Multiply both terms by 2. B) Order reversed. C) Only one term scaled. D) Different ratio entirely.
A fruit basket has 3 apples and 5 oranges. The ratio of apples to TOTAL fruit is:
Answer: C — 3:8
C) Total = 3 + 5 = 8 → 3:8. A) True ratio in the basket, but it's apples-to-oranges, not the question. B) Direction reversal. D) Oranges-to-total — half-right.
Which is NOT a way to write a ratio of 5 to 8?
Answer: D — 5 − 8
D) Ratio is NOT subtraction. A), B), C) are the three standard forms.
4 cards from the 44 in this chapter.
Convert 2.5 hours to minutes.
150 minutes.
Find an equivalent ratio to 3:4.
Many: 6:8, 9:12, 12:16, 30:40. Multiply both parts by the same number.
15 is what percent of 60?
25%. (15/60 = 1/4 = 25%.)
Word: A test has 50 questions. You got 40 right. What percent?
80%.
These are a sample. The full Understanding Ratios chapter runs 56 items with per-chapter progress tracking, on the web and in the iOS app.
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