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100 days of practice drills with an answer key included in the back. Boxed columns help students keep their place values organized. This is the perfect workbook for students learning to regroup while adding and subtracting. Begin with 2digit problems. Work your way up to 3digit problems and larger.
⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer,
birth defects, or other reproductive harm.
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