Quickname: 1655

Suitable for K-12 grades: Grade 3 Grade 4 Grade 5 Grade 6 Grade 7 Grade 8

Elementary School, Primary School, Junior High School, Middle School, High School.

In a magic triangle, six numbers have to be filled in correctly.

A magic triangle is shown. The triangle consists of six boxes that form the three vertices and the three edges. Across each edge, a number is indicated. Numbers have to be filled in in a way that the sum of the boxes along each edge matches the number indicated.

The numbers are whole numbers and can be selected to be positive, negative or both. The number of decimal places can be chosen.

Some boxes may be already filled with the correct numbers. There are multiple options on which of the boxes are already filled in. As a further aid, a sorted list with the numbers to be filled in can be provided with the problem.

The number of problems can be selected.

Topics: Arithmetic Elementary arithmetic Puzzles Rational Numbers Whole Numbers

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Parameter

Possible values

Number of problems

1, 2, 3, 4, 5, 6

Number range

20, 30, 40, 50, 100, 200, 500, 1000, 10000, 100000

Decimal places

0, 1, 2, 3

Positive/Negative

mixed, positive, negative

Numbers already filled

Yes, No

Numbers to be used given

one, outer ones, inner ones, two in a row, three in a corner, none

Remark

Description

Name and direct link

Another fill-in problem: Frames and arrows

In a frames and arrows calculation chain task, the results are to be filled in the blank spaces.

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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