Solving Multi-Step Word Problems with Division: A Khan Academy Example
Khan AcademyJuly 2, 20252 min1,330 views
2 connections·4 entities in this video→Calculating Total Books
- 📚 A bookstore receives an initial 219 new books.
- 🚚 An additional 6 books arrive as a last-minute delivery.
- ➕ The first step is to calculate the total number of books by adding these two amounts: 219 + 6.
Performing the Addition
- 💡 The sum of 219 and 6 is calculated as 225 books.
- ✍️ This can be done mentally or by using column addition, where 9 + 6 equals 15 (carry the 1), 1 + 1 + 1 equals 3 (or 1+1=2 if not carrying), and 2 remains, resulting in 225.
Dividing Books Evenly
- 🗂️ The manager organizes all 225 books evenly onto three shelves.
- ➗ This requires dividing the total number of books (225) by the number of shelves (3).
Long Division for Division
- ➗ To find out how many books are on each shelf, perform the division: 225 ÷ 3.
- 🔍 Using long division, 3 goes into 22 seven times (7 * 3 = 21), leaving a remainder of 1.
- ➡️ Bring down the 5 to make 15. 3 goes into 15 five times (5 * 3 = 15), with no remainder.
- ✅ The result of the division is 75 books per shelf.
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What’s Discussed
Multi-step problemsDivisionWord problemsAdditionLong divisionKhan AcademyMathematicsElementary Math
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