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8: Advanced Proportional - Addition and Subtraction

 

Students at the Advanced Proportional stage are learning to select from a repertoire of part-whole strategies to solve and estimate the answers to problems involving fractions, proportions, and ratios. These strategies are based on finding common factors and include strategies for the multiplication of decimals and the calculation of percentages.

2 - (half + two thirds)
Four ninths of x is 16.