ANOTHER TIME SAVING RESOURCE BY GRIFFIN EDUCATION ENTERPRISES Do you need subtraction algorithm tests for your students? Do you need a spreadsheet that can calculate data for you? With our tests and spreadsheet, you’ll be able to clearly determine which of your students can confidently subtract large numbers using the subtraction algorithm. Includes: ✔️ 3 tests ✔️ An Excel spreadsheet which calculates: test score, percentage, maximum, minimum, range, class average and outcomes. ✔️ Test qu