About This Lesson
Six separate activities where students must subtract either 10; 50 or 100 from a given number. Running on a two minute timer; these tasks are can be used as a starter or work as both mental math drill and explanation activities.
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Six separate activities where students must subtract either 10; 50 or 100 from a given number. Running on a two minute timer; these tasks are can be used as a starter or work as both mental math drill and explanation activities.