Grade
4

Mobile Math: Balancing Fractions

Look at the mobile below. What do you notice? What do you wonder?

Find the missing values so that the mobile is balanced.

This mobile is balanced between 2 strings. The left string has 4 triangles. The right string has 2 squares. The value of a triangle is 1-tenth.

Write an equation that describes the mobile.

This mobile is balanced between 2 strings. The left string has 4 triangles. The right string has 2 squares. The value of a triangle is 2-thirds.

If the value of the orange triangle is now ⅔, how can you change the value of the squares so that the mobile remains balanced?

Printable Version

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Reference for Educators

Sample problems and solutions