Lesson 3

Multiplication Stories

Est. Class Sessions: 2

Teacher Notes

You can review the story “Yü the Great” from Unit 2 in the Student Guide to remind students of patterns that may be useful in solving the puzzle.

The magic square in Yü the Great totaled 15, and five was the middle number.

Complete the magic square using the numbers 10, 20, 30, 40, 50, 60, 70, 80, and 90. Each row, column, and diagonal must have a sum of 150.

How is this similar to the magic square solved by Yü the Great?