The purpose of this lesson is for students to use the standard algorithm to multiply up to five-digit numbers and one-digit numbers.
In grade 4, students interpreted the standard algorithm for multiplication and compared it to a partial products algorithm to multiply up to four-digit numbers and one-digit numbers. In this lesson, students extend their understanding of the standard algorithm to multiply up to five-digit numbers and one-digit numbers, including problems where one or more new units are composed. This is the first in a series of lessons to support students in developing fluency using the standard algorithm to multiply multi-digit numbers.
- Use the standard algorithm to multiply up to five-digit numbers by one-digit factors, including composing new units.
- Let’s use the standard algorithm to multiply one-digit numbers and multi-digit numbers.
|Activity 1||20 min|
|Activity 2||15 min|
|Lesson Synthesis||10 min|
Teacher Reflection Questions
What evidence do you see that your students are applying what they learned about partial products to make sense of the standard algorithm?
- Number Puzzles: Multiplication and Division (4–5), Stage 2: Multi-digit Factors (Addressing)
Print Formatted Materials
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