Build-the-Greatest-Difference

Build-the-Greatest-Difference is a Grade 4 subtraction game that turns digit placement into a place-value strategy problem. Players place drawn digits into a subtraction form, then calculate once the numbers are complete. Because an invalid setup can make the subtraction impossible, students have to think ahead about both the size of the numbers and the structure of the calculation.

Use it in a small group when students need multi-digit subtraction practice with more reasoning than a list of exercises provides. Compare the completed differences and ask which digit placements had the biggest effect on the result. Generate teacher-ready lesson support for Build-the-Greatest-Difference with a free Find a Math Game account. No credit card is needed, and free accounts include 3 lesson generations for life.