MENUNumber Lines: Magic Figures
Each level shows a target number at the top and, below it, a figure of circles joined by lines. Put the numbers in the circles so that every line adds up to the target. The sum beside each line turns green when the line is right, red when it is too big and orange when it is too small. Stuck? The hints show the trick of the circles where lines meet. 34 levels: triangles, squares, crosses, wheels and stars, plus levels with several targets to find, a missing number, negative numbers and multiplication. Your progress and stars are saved in this browser.
The original games: Number Lines - Phase 1 and Phase 2.
Missing Addends