Standard 4.OA.2
Multiply or divide to solve word problems involving multiplicative comparison, for example, by using drawings and equations with a symbol for the unknown number to represent the problem, distinguishing multiplicative comparison from additive comparison.
Explanation: We are learning to solve word problems in this standard. Students will see problems like:
Sally’s new computer has five times as much memory as her old computer. Her old computer had four gigs of memory. How much memory does her new computer have?
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