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This study aid Abacus Method Framework Flow chart Make 5 and 10 Addition and Subtraction provides guidance on using an abacus for addition and subtraction. It presents flowcharts outlining the steps for simple calculations and when to apply specific +- 5 and +- 10 formulas. Additionally, it includes instructions for creating a column isolator, a tool for focusing on specific columns of the abacus. The material also explains the commutative property in relation to making five and ten on the