Partial Products Multiplication

for iPad, iPhone, Mac, and Windows 10 PCs

This app can be used to teach and study the partial products multiplication method. The app is easy to use and it has an intuitive interactive interface with customizable colors and other settings. The user can solve custom and random multiplication problems.

The partial products multiplication method

The partial products multiplication method is a two-step process. In the example 39 x 24, each place value is first multiplied separately. The partial products are added and 36 + 120 + 180 + 600 produces the answer 936.

In the Everyday Mathematics curriculum the partial products method is the focus algorithm for multiplication.

The Partial Products Multiplication app

The numbers are aligned automatically so that the user can concentrate on solving the operations for each column.

After you solve the operation for each partial product the correct answer will fly to the right place. If you press the wrong button the answer will appear above the keyboard but it will not move.


  • Each number can have from 2 to 3 digits
  • Problems can be custom or random
  • The current operation can be hidden
  • The operands of the current operation can be highlighted
  • Colors of the interface can be changed
  • The speed of the animations can be set
  • Custom interfaces for iPad and iPhone

Partial Products Multiplication Videos

Partial products multiplication with two digit numbers

54 x 73



Partial products multiplication with three digits

9 x 425


Partial Products Multiplication in the Apple VPP Store for Education

The Volume Purchase Program allows participating educational institutions to purchase iDevBooks math apps in volume and distribute them to students. All iDevBooks math apps offer special 50% discount for purchases of 20 apps or more for participating educational institutions.

Partial Products Multiplication in the VPP store