Column Subtraction 6.5

This math application is designed for teaching and practicing the column subtraction method. It features an intuitive interactive interface with customizable colors and settings. Users can solve both random and custom subtraction problems involving numbers of various sizes, with the ability to set the number of digits in each number.

The column subtraction method, also known as columnar subtraction, long subtraction, or longhand subtraction, is a fundamental technique in arithmetic.

Review by Professor Tim Pelton

Tim Pelton, Assistant Professor of Mathematics Education at the University of Victoria, recommends the app for parents aiming to enhance their child's proficiency in traditional subtraction algorithms:

Endorsed by Educators

Rita Zeni from Ecole Sandy Hill Elementary in Abbotsford, BC, Canada, lauds Esa Helttula's math apps for enabling students to practice computation strategies introduced in class. The apps provide tailored feedback promptly, offering a level of engagement often unattainable through conventional methods. The ability to adjust difficulty levels enhances student motivation towards learning. Zeni expresses delight in discovering this valuable education tool.

Easy-to-Use Interface

The app automatically aligns numbers for straightforward column operation solving. The animated renaming process visually demonstrates each step, aiding comprehension. Users can choose manual or automatic renaming (also known as regrouping, trading, or borrowing). Renaming across multiple columns is supported.

Following each column operation solution, the correct answer smoothly transitions into place. Incorrect entries are displayed above the keyboard without affecting their position.

Six-Piece Jigsaw Puzzles

The app incorporates engaging picture puzzles of adorable animals. For every solved addition problem, one more piece of a six-piece puzzle is revealed progressively.

The jigsaw puzzle feature can be easily toggled on or off at any time.

Settings:

• The app supports subtracting 2 or 3 numbers
• Each number can consist of 1 to 5 digits
• Users can opt for random or custom problem generation
• Renaming can be manual or automatic
• The current operation display per column can be hidden
• Operands within each operation can be highlighted
• Animations speed can be adjusted
• Different interfaces tailored for iPhone and iPad users
• Unlock 25 animal jigsaw puzzles piece by piece during practice sessions
• Jigsaw puzzle display can be hidden

Other iDevBooks Math Apps

iDevBooks has an extensive collection of math applications that have received accolades from prominent educational platforms including Wired.com, IEAR.org, Edudemic.com, Teachers with Apps, among others. Their suite includes apps like Column Addition, Long Division, Long Multiplication, Lattice Multiplication, Visual Multiplication Table, Fraction Math, Partial Differences Subtraction, Partial Quotients Division, Partial Sums Addition, and more.

User Feedback and Feature Requests

New ideas for enhancing this app are encouraged. Visit idevbooks.com to provide feedback and suggestions.

Privacy Assurance

This advertisement-free application does not include in-app purchases or data transmission. It does not contain external links and prioritizes user privacy during operation.