TEKS 5.3B: Multiply Using Standard Algorithm
One-Step Multiplication of 3-Digit by 2-Digit Numbers
About this lesson
Learning Target: I can multiply a 3-digit number by a 2-digit number using the standard algorithm in one step.
Focuses On:
- Multiplying a two digit by three digit number
- Solving a one-step word problem involving two digit by three digit multiplication
- Identifying errors made when multiplying a two digit by one digit number
Builds On:
4.4H:
Solve with fluency one- and two-step problems involving multiplication and division, including interpreting remainders.
Next Level:
7.3A:
Add, subtract, multiply, and divide rational numbers fluently.
Read More:
This lesson is designed to support student understanding of multiplying a two digit by a three digit number by using the algorithm.
The two instructional blocks in this lesson focus on the algorithm and error analysis.
The first instructional block starts by teaching the algorithm in given multiplication equations. Students then apply this knowledge to solve one step word problems involving two digit by three digit multiplication. Students who struggle are given step by step support.
The second instructional block has students analyze common errors in this type of multiplication.
This lesson should be taught before 5.3E and with 5.4B.
Grade 5MathTEKS 5.3B
