Sum Stacks
3.9 / 5(660 Votes)Instructions
At the top of your screen are several target numbers. Use the red, green, yellow and purple numbers to make each target number. Each color corresponds to a different mathematical operation. If you drop a number of one color onto another, the mathematical operation the number that is dropped is applied (so if you drop x3 onto +2, the answer will be 6, but if you drop the +2 onto x3, the answer will be 5.)
At the top of your screen are several target numbers. Use the red, green, yellow and purple numbers to make each target number. Each color correponds to a different mathematical operation. If you drop a number of one color onto another, the mathematical operation of the dropped number is used (so if you drop x3 onto +2, the answer will be 6, but if you drop the +2 onto x3, the answer will be 5.)
The puzzle is only solved when all of the numbers have been made. Use your mouse to stack numbers.
How to play Sum Stacks on your phone
Did you know you can also play Sum Stacks on your phone? It’s a great way to play without worrying about losing your save data.
For iOS devices, simply tap the "Share" icon 
in Safari and select "Add to Home Screen". For Android devices, tap the “Menu” icon 
and select "Install App".
Game Progress
3.9 / 5(660 Votes)Instructions
At the top of your screen are several target numbers. Use the red, green, yellow and purple numbers to make each target number. Each color corresponds to a different mathematical operation. If you drop a number of one color onto another, the mathematical operation the number that is dropped is applied (so if you drop x3 onto +2, the answer will be 6, but if you drop the +2 onto x3, the answer will be 5.)
How to play Sum Stacks on your phone
To play Sum Stacks easily any time, you can add it directly to your phone as an app. It’s a great way to play without worrying about losing your game save data.
For iOS devices, simply tap the "Share" icon in Safari and select "Add to Home Screen". For Android devices, tap the “Menu” icon and select "Install App".
Votes