1
Bronze
Which number comes just before 500?
A 501
B 510
C 499
D 490
▶ Show Answer
Correct: C) 499
The number just before 500 is 499. Counting: ...497, 498, 499, 500, 501...
Number Sense Questions for Class 2 Olympiad | Grade 2 Math IMO | Glovoy
Class 2 Math 5 free questions · Updated March 2026
Number sense is the broadest topic in Class 2 Math Olympiad — it covers ordering, comparing, skip-counting, digit patterns and logical number puzzles. Bronze questions test whether a child can correctly order three-digit numbers or find the number just before or after a given value. Silver questions add a layer of logic, such as identifying a mystery number from clues about its digits. Gold questions are the most creative: skip-counting sequences and digit-arrangement puzzles where the answer requires systematic thinking.
Free Practice Questions
2
Silver
Aarav arranges the numbers 347, 374, 304 and 473 from smallest to largest. Which is the correct order?
A 374, 347, 473, 304
B 304, 374, 347, 473
C 304, 347, 374, 473
D 347, 304, 473, 374
▶ Show Answer
Correct: C) 304, 347, 374, 473
Compare hundreds first: 304, 347 and 374 each have 3 hundreds; 473 has 4 hundreds so it is the largest. Among the 3-hundred numbers, compare tens digits: 0 < 4 < 7. So the order is 304, 347, 374, 473.
3
Silver
Maya thinks of a 3-digit number between 410 and 420. The ones digit is 3 times the tens digit. What is Maya's number?
A 413
B 416
C 419
D 412
▶ Show Answer
Correct: A) 413
The number is between 410 and 420, so the hundreds digit is 4 and the tens digit is 1. Ones digit = 3 × 1 = 3. The number is 413.
4
Gold
Rohan counts by 4s starting from 12. Maya counts by 6s starting from 6. What is the smallest number that appears in both their counts?
A 12
B 24
C 18
D 36
▶ Show Answer
Correct: A) 12
Rohan's count: 12, 16, 20, 24… Maya's count: 6, 12, 18, 24… The smallest number in both lists is 12.
5
Gold
Priya uses the digits 3, 7 and 2 to form all possible 3-digit numbers (each digit used exactly once). What is the difference between the largest and the smallest number she can make?
A 495
B 505
C 459
D 465
▶ Show Answer
Correct: A) 495
Largest number using 3, 7, 2 = 732. Smallest number = 237. Difference: 732 − 237 = 495.
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