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How does multiplying two whole numbers relate to multiplying a fraction by a whole number?
Look for and express regularity in repeated reasoning.
In Grade 5, students use equivalent fractions as a strategy to add and subtract fractions with unlike denominators and apply and extend previous understandings of multiplication to decimals.
(Given two fractions with like denominators, each of which is less than 1/2) Before adding these two fractions, can you predict whether the sum will be greater than or less than 1? How do you know?
In Grade 3, students develop understanding of fractions as numbers and represent and solve problems involving multiplication and division.