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Grade 5 Math Β· World 2: Multiplication Mountain Β· Level 11
Three Digits Times Two Digits
Split 243 Γ 36 into partial products on an area model.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 11
- Now let's try 243 times 36. Split 243 into 200, 40, and 3. Split 36 into 30 and 6. That makes 2 rows of 3 parts.
- Fill in each part. For example, 30 times 200 is 6,000, because 3 times 2 is 6, and the zeros tell the place.
- Add each row. The top row is 7,290, and the bottom row is 1,458.
- Together, they make 8,748. Each part is easy, and the model keeps you from losing any of them.
Georgia's K-12 Mathematics Standards:
- 5.NR.2.1 β Fluently multiply multi-digit (up to 3-digit by 2-digit) whole numbers to solve authentic problems.