Teachers, save “Today's Number is 73” to assign it to your class.

Write 10 or more equations that equal 73. You can write addition equations, subtraction equations, and even equations that use addition and subtraction. For an extra challenge, try writing equations with more than two numbers. For example, ___ + ____ + ____=73 or ___ -____ - ____=73. Remember to record yourself explaining how you know that 3 of your equations are right.