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And the project helped Berry’s students master some important 5th grade math concepts—such as adding and subtracting multidigit numbers with ... the occasional worksheet still has its place.

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Timed tests and “mad minutes” of worksheet problem-solving. Fluency drills. Somehow, getting kids to know their basic math facts ... with smaller numbers, gradually adding more difficult ...

Fourth-grade math ... numbers (numbers without fractions) that can be multiplied together to get another number. Understand that one number can have several factor pairs – for example, 3 and 4 ...