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Student: The numbers are all multiples of three. The medium sized bag has two thirds as many raspberry lollies, so it will have two thirds as many of the others too. Two thirds of eighteen is twelve and two thirds of twenty-one is fourteen. |
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. |
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