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Curious Cheetah

Cross Math

Background

The origin of this puzzle is not known.

Puzzle and Goal

An unsolved puzzle consists of a square grid with mathematical operators between them. There are number clues at the right and bottom.
The goal is to place numbers in the grid such that the equations are true.

Rules

The solved grid must satisfy the following conditions:

Other Names

MathemaGrids; Rechengitter

Playable Online