# Subtraction

## Basic Facts

#### Manipulatives

– Crickweb: Hundred Chart

#### Games

Most games are timed & 1 player

Basic Facts
– Interactivate: Connect Four
– Mr. Nussbaum: Dr. Chomper & Fast Food Math (not timed)
– Arcademics: Ducky Race (up to 12 players)
– Arcademics: Island Chase (up to 4 players)
– Mr. Nussbaum: Lord Voldemath
– Mr. Nussbaum: Race Cars
– Aracademics: Sailboat Tug of War (up to 8 players)
– Craziness: Subtraction Action

– Mr. Nussbaum: Buffalo Hunting
– Mr. Nussbaum: Pretzel Arm Wrestling War
– Manga High: Sundae Times Lite

More Games
– Fun4thebrain.com
– Multiplication.com

## 2- & 3-Digit Subtraction

#### Lesson

2-Digit Subtraction
No Regrouping
– BrainPOP Jr.: Subtraction
– Dositey: Step-by-Step Train Subtraction
Regrouping
– BrainPOP Jr.: Subtraction
– Dositey: Step-by Step Train Subtraction

#### Manipulatives

– Crickweb: Hundred Chart

#### Games

2-Digit Subtraction
– 2-Digit Bee Subtraction
– Draggable subtraction

Up to 4-Digit Subtraction
– Mission 2110

#### Quizzes

2-Digit Subtraction
No Regrouping
– NumberNut: Subtract horizontally
– NumberNut: Subtract vertically
– NumberNut: Compare differences
Regrouping
– NumberNut: Subtract vertically
– NumberNut: Compare differences

3-Digit Subtraction
– No Regrouping
– NumberNut: Subtract vertically
– Regrouping
– NumberNut: Subtract vertically
– IXL: Subtract vertically
– IXL: Find the missing digits

4-Digit Subtraction
– No Regrouping
– NumberNut: Subtract vertically
– Regrouping
– NumberNut: Subtract vertically
– IXL: Subtract 4 or more digits
– IXL: Find the missing digits

Word Problems
– NumberNut: 2-digit subtraction (regrouping)
– IXL: 3-digit subtraction (regrouping)
– Mr. Nussbaum: Best Math Friends (addition & subtraction)
– Level 1
– Level 2
– Level 3

## Estimated Difference

#### Lesson

– BrainPOP: Estimation

#### Games

– Quia: Hangman (round to nearest thousand & add/sub)

#### Quizzes

– NumberNut: Nearest ten (2-digit numbers)
– NumberNut: Nearest hundred (3-digit numbers)

## Need Help From the Textbook?

Ch. 2: Number Sense: Adding & Subtracting Whole Numbers
Ch. 3: Developing Proficiency: Adding & Subtracting Whole Numbers