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Fast Subtraction
Simple subtraction with 2 operands. For examp le, 9-5, 5-2, etc. The focus here is to build up speed.
This topic aligns to the following state standards
Grade 1: 1. Use one-digit addition and subtraction to solve real-world and mathematical problems.
Grade 2: 1. Use one- and two-digit addition and subtraction to solve real-world and mathematical problems.
Grade 3: 5. Demonstrate mastery of subtraction facts that are inverses of the basic addition facts, without a calculator.
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