Skip to main content

Atlas
Problems
Diagnostic
Mock
Papers
About

The whole Atlas

Number & Arithmetic15
Counting18
Geometry & Visualization18
Logic & Deduction11
Patterns & Sequences7
Modeling & Word Problems10
Contest Craft12

Loading…

About
Sign in
Worksheets
Privacy
Terms
License
Contact
GitHub

Code is MIT. Problems, skills, and explanations are CC BY-NC-SA 4.0. Practice never requires an account and nothing here is paywalled.

Independent project. Not affiliated with or endorsed by Math Kangaroo in USA, NFP.

Home
Atlas
Problems
Papers

Browse the problems

177 problems, every one written from scratch, every wrong answer carrying the mistake that produces it. 708 explanations in all.

Level

1–2
3–4
5–6
7–8
9–10
11–12

Point value

3 pt
4 pt
5 pt

Strand

NUMNumber & Arithmetic
CNTCounting
GEOGeometry & Visualization
LOGLogic & Deduction
PATPatterns & Sequences
MODModeling & Word Problems
CFTContest Craft

Sort

Id
Hardest first
Newest

6 problemsClear all filters

KA-0119
3 points, difficulty 1 of 3Level 3–4not yet calibrated
Bo has 24 marbles and gives a third of them to Ana. How many more marbles does Bo have than Ana now?
CFT-01Find what is actually being askedalso NUM-09
KA-0120
3 points, difficulty 1 of 3Level 3–4not yet calibrated
A cat walks 3 m north, then 4 m east, then 3 m south. How many metres is it now from where it started?
CFT-02Draw the diagramalso GEO-02
KA-0127
3 points, difficulty 1 of 3Level 3–4not yet calibrated
One minute is left. Three questions have no answer written and you cannot do any of them. Nothing is taken off for a wrong answer. What should you do?
CFT-09Never leave a blank — there is no penaltyalso CFT-08
KA-0131
4 points, difficulty 2 of 3Level 3–4not yet calibrated
Twice a number, with 3 added, gives 17. Which of the choices is the number?
CFT-04Back-solve from the answer choicesalso MOD-01, LOG-08
KA-0132
4 points, difficulty 2 of 3Level 3–4not yet calibrated
Ana has exactly 5 coins, each worth either 2 cents or 5 cents. Which of these could NOT be her total?
CFT-05Eliminate impossible choices by boundingalso CNT-04, NUM-06
KA-0150
4 points, difficulty 2 of 3Level 3–4not yet calibrated
A diagonal joins two corners of a shape that are not next to each other. How many diagonals does a hexagon have?
CFT-03Try small cases firstalso CNT-08, GEO-06

Browse the problems — Kangaroo Atlas