Split or Stack

Teams solve multi-digit multiplication one step at a time. Each problem, choose Split it (area model and partial products) or the standard algorithm, then check each other's work and call Challenge! on mistakes.

Grades 4–5Step-by-step team game1–6 players or teamsNo student loginsWorks offline

$5Buy Split or Stack ▶ Play the free demo 🎁 Get this game free

Try it free with your class: the demo runs right in your browser for 5 questions or 5 minutes, whichever comes first. No sign-up needed.

Or get every game, including all future games, with the All-Access Teacher License for $150.

Screenshot of Split or Stack in the middle of a game

What students practice

Estimating products by rounding, area models, partial products, splitting one factor or both factors by place value, multiplying by multiples of 10 and 100, adding partial products, the standard algorithm with carrying, multiplying by the ones and tens digits with a placeholder zero, adding rows, checking and correcting a partner's steps

Great for

Whole-class review on the smartboard, math centers, test prep, early finishers and sub plans. No prep and no student logins.

Standards

OAS 4.N.2.2–3 · 5.N.2.4

Common Core: 4.NBT.B.5 · 5.NBT.B.5

How it works

Open the game file in any web browser: Chromebooks, laptops or your smartboard. No accounts, no student logins and no internet needed once it's downloaded.
Enter the players or teams, then press Start.
Students take turns on one shared screen, so the whole class can play together on a projector or smartboard.
Each purchase includes the game file and a one-page Quick Start guide.