- Developer: Catherine Vitti
- Website: Official website
- Release Date: 2014-05-31
- Supports: Family Sharing
- Languages: English
- Compatibility: Requires iOS 8.2 or later. Compatible with iPhone, iPad, and iPod touch.
Summary
## Description
Practice solving subtraction problems of one-digit to five-digit numerals. Work column-by-column or by doing the math in your head and selecting from multiple choices.
Proper borrowing is enforced in the column-by-column mode. You can display the borrowing in multiple-choice mode as a "helpful hint."
Five background color choices, including white-on-black (with no grayscale) for users with mild visual impairment.
Ideal for the classroom iPad, where the large numerals allow for demonstrations to a group or for team-based practices.
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