Hi! My name is Matthew

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Instructions:

Insert numbers into empty fields in triangle (grape). The sum of two neighbouring numbers in one row must be equal to number below those fields. The sum of all green fields must be equal to predefined number.

1stGRADE, TRIANGLES WITH CONDITION 32nd grade, Triangles with condition 3 levels3rd grade, Triangles with condition 3 levels3rd grade, Triangles with condition 4 levels3rd grade, Triangles with condition 4 levels4th grade, Triangles with condition 3 levels4th grade, Triangles with condition 4a levels4th grade, Triangles with condition 4b levels5th grade, Triangles with condition 4a levels5th grade, Triangles with condition 4b levels6th grade, Triangles with condition 3 levels

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