Lesson 1: Number Families

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Math Mastery: Subtraction [30:00]
10 Segments
Lesson 1: Number Families [06:56]
Lesson 2: Column Subtraction and Problem Solving with Subtraction [04:42]
Lesson 3: Column Subtraction with Regrouping [05:29]
Lesson 4: Working with Three Digit Numbers [05:36]
Lesson 5: Solving Comparison Problems [03:48]
Lesson 6: Working with Large Numbers and More Regrouping [03:33]
Lesson 7: Regrouping Twice in Subtraction Problems [04:01]
Lesson 8: Subtraction Numbers with the Digit Zero [06:14]
Lesson 9: Solving Problems Using Tables [05:28]
Lesson 10: Subtraction Word Problems [07:10]

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Segment Description

Number families contain three numbers, two small and one big. Using several different number families, students identify the subtraction and addition facts that can be formed using specific combinations of big and small numbers.

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Grades: 3-5   |   Copyright: 2001