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Number Challenge Quizzes and Trivia Questions
Number Challenge builds confidence with arithmetic, fractions, measurement, and number patterns. These original worked exercises make each step visible: identify the operation, calculate carefully, and use the explanation to check whether your answer fits the question.
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Major Number Challenge subtopics
- Arithmetic
- Number patterns
- Measurement
- Mathematical logic
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Number Challenge questions and answers
Try each question before opening its answer and explanation.
1. You have 18 coins and earn 7 more. How many coins do you have?
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Answer: 25
Add the new coins to the starting amount: 18 + 7 = 25.
2. Six boxes contain four pencils each. How many pencils are there?
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Answer: 24
Multiply the number of boxes by the pencils per box: 6 × 4 = 24.
3. What is one quarter of 20?
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4. A 90-minute lesson begins at 2:00 pm. When does it end?
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Answer: 3:30 pm
Ninety minutes is one hour and thirty minutes.
5. What is 15 percent of 200?
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Answer: 30
Ten percent is 20 and five percent is 10; together they make 30.
6. Three equal bags hold 27 marbles altogether. How many are in each bag?
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More Number Challenge practice questions
These questions come from the live QZify category pool. The selection refreshes periodically.
1. What is the smallest positive number divisible by every whole number from 1 to 10?
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Answer: 2520
2. What is the sum of the first 100 positive whole numbers?
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Answer: 5050
3. The metric prefix "atto-" makes a measurement how much smaller than the base unit?
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Answer: One Quintillionth
4. In Roman Numerals, what does XL equate to?
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Answer: 40
5. What's the square root of 49?
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Answer: 7
6. What are the first 6 digits of the number "Pi"?
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Answer: 3.14159
7. Which fraction is equal to 0.125?
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Answer: 1/8
8. How many sides does a trapezium have?
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Answer: 4
9. What shape does sin(x) or cos(x) make on a graph?
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Answer: Waves
10. How many zeros are there in a googol?
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Answer: 100
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