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Teacher Notes (not visible to students)

This activity helps 5th graders practice multiplying and dividing decimals using place-value reasoning and algorithms. It includes short practice tasks, matching and sorting activities, a few auto-graded questions, and open-ended tasks where students explain their reasoning. Use the vocabulary pages and matching activity to introduce terms before practicing problems. For the partner activity, prepare simple manipulatives (base-ten blocks or printed decimal grids) or have students draw grids on paper. High-quality answers explain the decimal-point reasoning and show checks (estimation or inverse operations). For open-ended responses, look for clear steps, correct decimal placement, and an explanation (e.g., how many decimal places were counted or why the decimal moved). Accept multiple valid strategies if the final answer is correct and the reasoning matches the strategy used.