Common Core: 3rd Grade Math

Explore the foundational concepts of mathematics through engaging activities and problem-solving strategies designed for 3rd graders.

Place Value and Number SenseAddition and Subtraction StrategiesIntroduction to Multiplication
Division and Relationship to MultiplicationFractions as NumbersUnderstanding Area and Perimeter
Math in ShoppingTelling Time and Reading ClocksSolving Real-World Problems
Drawing and ModelingChecking Your Work and Estimating
Place Value and Numb...Addition and Subtrac...Introduction to Mult...Division and Relatio...Fractions as NumbersUnderstanding Area a...Math in ShoppingTelling Time and Rea...Solving Real-World P...Drawing and ModelingChecking Your Work a...
Advanced Topics

Division and Relationship to Multiplication

Understanding Division

Division means splitting a total into equal parts. It's the opposite of multiplication!

How Division Works

  • If you have 15 cookies and 3 friends, dividing 15 by 3 tells you how many cookies each friend gets.
  • \( 15 \div 3 = 5 \)

Connection to Multiplication

  • Multiplication and division are like best friends: if you know one, you can figure out the other!
  • If \( 4 \times 3 = 12 \), then \( 12 \div 3 = 4 \).

Using Division in the Real World

Division helps with sharing, splitting, and organizing things equally.

Key Formula

\[a \div b = c\]

Examples

  • 18 ÷ 6 = 3 (split 18 into 6 groups, each has 3)

  • If 5 × 4 = 20, then 20 ÷ 4 = 5

In a Nutshell

Division splits a number into equal groups and is closely linked to multiplication.

Key Terms

Quotient
The answer to a division problem.
Dividend
The number being divided.
Divisor
The number you are dividing by.
Next
Fractions as Numbers