Long Multiplication

for iPad, iPhone, Mac, and Windows 10 PCs

The Long Multiplication app allows you to solve random and custom multiplication problems using the long multiplication method. The method is also known as the column multiplication method.

Suitable for several age groups

The app has settings that make it easy for children or challenging enough for even adults.

Easy to use

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

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


  • The upper number can have up to 5 digits
  • The lower number can have up to 4 digits
  • You can use random problems or enter your own
  • The current operation for each column can be hidden
  • The operands for the current operation can be highlighted
  • There are 3 different themes: black, gray and gold
  • Speed of the animations can be set
  • Custom interfaces for iPhone & iPad

Long Multiplication Videos

Long multiplication with two digit numbers

54 x 73



Long multiplication with four and five digit numbers

5661 x 66439


Long 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.

Long Multiplication in the VPP store