In this video, we'll explore how to interpret and write simple numerical expressions. Perfect for students looking to sharpen their math skills with clear examples and interactive practice.
🔍 Lesson Agenda:
Introduction to numerical expressions and key vocabulary
Breakdown of addition, subtraction, multiplication, and division keywords
Step-by-step process for interpreting numerical expressions
Practice problems with detailed solutions
Fun word problem to test your understanding
Learning Objectives:
Understand how to write and match simple numerical expressions.
Recognize key terms associated with each mathematical operation.
Apply the correct operation symbol to create and solve expressions.
Topics Covered:
Key Vocabulary:
Expression: A mathematical statement involving numbers and operation symbols.
Addition Keywords: Add, altogether, sum, total, increase, etc.
Subtraction Keywords: Take away, difference, fewer, less, decrease, etc.
Multiplication Keywords: Multiply, each, twice, product, double, etc.
Division Keywords: Divide, quotient, share equally, goes into, etc.
Practice Problems:
Example 1: Twice the sum of 5 and b
Answer: 2 (5 + b)
Example 2: 12 decreased by n
Answer: 12 - n
Example 3: 40 shared equally among v
Answer: 40 ÷ v
Word Problem:
Problem: Rachel and her 3 friends each bought lemonade for 2 dollars. How much money was spent?
Answer: (1 + 3) × 2
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