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Lesson Plans and Worksheets for Grade 5
Lesson Plans and Worksheets for all Grades
More Lessons for Grade 5
Common Core For Grade 5
Examples, solutions and videos to help Grade 5 students learn how to convert numerical expressions into unit form as a mental strategy for multi-digit multiplication.
Common Core Standards: 5.OA.1, 5.OA.2, 5.NBT.5
New York State Common Core Math Grade 5, Module 2, Lesson 4
Grade 5, Module 2, Lesson 4 Worksheets (pdf)
The following figure shows how to convert numerical expressions to simplify multi-digit multiplications. Scroll down the page for more examples and solutions.
Lesson 4 Concept Development
Problems 1–2
8 × 31
8 × 29
Problems 3–4
49 × 20
20 × 51
Problems 5–6
101 × 12
12 × 98
Lesson 4 Problem Set
Lesson 4 Homework
This video demonstrates how to use mental math to evaluate expressions involving multiplication.
3. Define the unit in word form and complete the sequence of problems.
a. 29 × 12 = 29 ____________________ Think: 30 _____________ – 1 _____________
= 30 × ______) – (1 × _____)
= __________ – __________ = __________
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