Math Olympiad Questions for Class 3 (With Answer Sheet)

If you’re helping a child get ready for an olympiad exam, you’ve probably noticed that regular school homework doesn’t quite prepare them for it. That’s where a focused set of math olympiad questions for class 3 comes in handy. Below, you’ll find a practice paper built around the topics that actually show up in these exams, plus a complete answer sheet at the end so you can check the work without waiting on anyone.

I’ve taught this age group for a while now, and one thing I’ve learned is that class 3 students don’t struggle with olympiad math because it’s too hard. They struggle because the questions are worded differently from what they’re used to. So the goal here isn’t to throw tough problems at them. It’s to get them comfortable with the style of an olympiad question, using topics they already know from class.

☰ Table of Contents

Why Bother With Olympiad Practice at This Age?

A fair question. Third grade already has enough going on. Why add more?

Here’s the honest answer: working through grade 3 math olympiad questions on a regular basis does a few things that regular homework often doesn’t.

It forces kids to slow down and actually read a question before answering it, instead of pattern-matching to whatever sum looks familiar. It exposes them to slightly different phrasing, so they’re not thrown off the first time they see a question that isn’t laid out the usual textbook way. And it quietly sharpens the basic times tables, place value, simple fractions because those fundamentals show up again and again, dressed up in new contexts.

Most olympiad exams for this age group (IMO, NSO, and various state-level contests included) tend to circle around the same handful of areas: numbers, basic arithmetic, shapes, measurement, and a bit of logical reasoning. So that’s exactly why this set of math contest problems for 3rd grade students is built around nothing exotic, just the fundamentals asked in a slightly less predictable way.

What's In This Practice Set

A quick heads-up before your child dives in. These class 3 olympiad-style math worksheets cover:

Number sense (place value, comparing and ordering numbers)
Basic arithmetic addition, subtraction, multiplication, division
Simple fractions
Shapes and number patterns
Time and measurement
A few logical reasoning and word problems

Nothing here needs outside coaching. If a child can read at a class 3 level and knows their tables up to 10, they should be able to attempt every question below.

Practice Questions

A suggestion before starting: get a pencil and some rough paper out, and try to answer everything before flipping down to the answer sheet. Olympiad exams reward the habit of attempting a question properly rather than guessing, so it’s worth building that muscle here too.

Section A — Number Sense

What is the place value of 7 in the number 4,732?
Which of these is the greatest: 3,456, 3,465, or 3,546?
What number comes just before 6,000?
Arrange in ascending order: 245, 254, 452, 425.

Section B — Arithmetic

Add: 2,345 + 1,678
Subtract: 5,003 − 2,468
A packet has 8 pencils. How many pencils are there in 6 packets?
72 sweets are shared equally among 9 children. How many does each child get?

Section C — Fractions

Which is bigger 1/2 or 1/4?
Ravi ate 3 slices from a pizza that was cut into 8 equal slices. What fraction did he eat?

Section D — Shapes and Patterns

How many sides does a hexagon have?
What comes next in this pattern: 2, 4, 6, 8, __?
How many equal sides does a square have?

Section E — Time and Measurement

A movie starts at 4:15 PM and runs for 2 hours. What time does it end?
Which is longer, 1 metre or 90 centimetres?

Section F — Logical Reasoning

Meena is older than Raj but younger than Sam. Who’s the oldest of the three?
A basket has 5 red balls and 7 blue balls. How many balls in total?
What comes next: A, C, E, G, __?

This mix is fairly typical of a sample math olympiad paper for class 3: a few quick wins early on, and a couple that need a moment of actual thinking. That’s intentional. An exam full of only easy sums doesn’t build much, and one that’s all hard questions just discourages a nine-year-old.

A Few Tips Before the Real Exam

Nothing groundbreaking here, just what tends to actually help:

Read the question twice before answering most wrong answers in this age group come from misreading, not from not knowing the math. Encourage rough work even on questions that seem simple; the habit matters more than the specific sum. With pattern questions especially, don’t let a child guess, get them to say out loud what’s changing from one number (or shape) to the next before they write an answer.

And don’t underestimate short, regular practice. Ten minutes most days beats one long session over the weekend, every time this is true for adults learning something new too, if you think about it.

If some of these felt tough, that’s completely fine and expected. Starting with easy math olympiad questions for grade 3 and slowly working up to harder ones is a much better approach than jumping straight into full-difficulty papers and losing confidence in week one.

Answer Sheet

Section A

700 (the 7 sits in the hundreds place)
3,546
5,999
245, 254, 425, 452

Section B
5. 4,023
6. 2,535
7. 48 pencils
8. 8 sweets each

Section C
9. 1/2
10. 3/8

Section D
11. 6 sides
12. 10
13. 4 equal sides

Section E
14. 6:15 PM
15. 1 metre (100 cm is more than 90 cm)

Section F
16. Sam
17. 12 balls
18. I (the pattern skips one letter each time)

Conclusion

Practicing math olympiad questions for class 3 isn’t really about one exam, it’s about building a habit of thinking carefully through a problem instead of rushing to an answer. That skill carries forward well past third grade. Try weaving a worksheet like this into a weekly routine rather than pulling it out only right before the exam, and rotate in a few new question types each time so it stays interesting rather than repetitive.