Question 1 of 5
Which whole number is one less than 1,000?
Answer & explanation
999
Subtracting one from 1,000 crosses a place-value boundary: the result has nine hundreds, nine tens, and nine ones.
5 questions · Untimed · Free
Mathematics & Logic
A little number sense goes a long way. Try five questions about place value, angles, perimeter, and percentages. Each answer comes with a short explanation to help the idea click.
0 of 5 answeredYour first question is ready.
- 01
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Question 2 of 5
What is the measure of a right angle?
Answer & explanation
90°
A right angle is one quarter of a full 360° turn.
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Question 3 of 5
What does perimeter measure?
Answer & explanation
The distance around a shape
Perimeter follows a two-dimensional boundary and uses length units.
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Question 4 of 5
What does percent mean?
Answer & explanation
Per hundred
Percent means per hundred, so 25% represents 25 out of 100 equal parts.
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Question 5 of 5
Which percent is equal to 1/4?
Answer & explanation
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FROM ANSWERING TO UNDERSTANDING
What you can learn from this quiz
- Whole numbers and right angles
- The meaning of perimeter
- Percentages and a familiar fraction
A way to learn more from each answer
Before choosing an answer, name the quantity the question asks for. Sketch the shape or write the number relationship if it helps. Use the explanation to check your reasoning, rather than remembering only the answer letter.
Read further with a quiz source: OpenStax: Introduction to Whole NumbersBefore you move on
Choose a question that surprised you. Explain the answer in your own words and open its source link if you want to explore further. You can try again; the score reflects this short quiz, not your mastery of the whole category.
Read examples and explanations in the learning guide →
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