🎯 Learning Objectives

By the end of this section, you will be able to:

• Identify the parts of a number sentence (numbers, operation signs, and equal or inequality signs)

• Create number sentences using addition, subtraction, multiplication, and division1.

• Solve number sentences to find the missing number1.

• Compare number sentences using equal (=), greater than (>), and less than (<) signs35.

• Translate word problems into number sentences and solve them

📝 Core Concepts

1. What is a Number Sentence?

• A math expression with numbers, operation signs (+, -, ×, ÷), and an equal (=) or inequality sign (<, >)3.

• Example: 5 + 3 = 8

2. Parts of a Number Sentence:

• Numbers: The values we are working with.

• Operation Signs: Tell us what to do (+, -, ×, ÷).

• Equal or Inequality Sign: Shows the relationship between the two sides of the sentence

3. Types of Number Sentences:

• Addition : Combining numbers to find the total3.

• Subtraction : Taking away one number from another3.

• Multiplication : Repeated addition3.

• Division : Sharing equally

4. Inequalities:

• Use < (less than) and > (greater than) to compare number sentences3.

• Example: 4 + 5 < 4 + 6

5. Word Problems:

• Translate math statements into number sentences13.

• Keywords: sum (+), difference (-), product (×), quotient (÷)

🎲 Activities to Try

• Build a Sentence : Use number cards and operation sign cards to create your own number sentences.

• Solve the Mystery : Solve number sentences with missing numbers.

• Word Problem Challenge : Turn word problems into number sentences and solve them.

• Inequality Explorer : Compare different number sentences using <, >, or = signs.