Math Mammoth Grade 4-B WorktextMath Mammoth Grade 4 B Worktext is the student book for the latter half of grade 4, and part of the Math Mammoth Grade 4 complete curriculum. This book covers long division, factors, geometry, an introduction to fractions, and an introduction to decimals. The worktext contains both the necessary instruction and the problems & exercises (the 'text' & and the 'work'; thus a "worktext"), and is fairly self teaching. The curriculum meets and exceeds the
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