01
Subtraction Basics
Understand subtraction as taking away, finding the difference and comparing quantities.
SUBTRACTION LEARNING & PRACTICE HUB
Master Subtraction.
Build number sense, mental math, written methods and real-world problem-solving — from beginner facts to advanced mastery.
20
20 Modules
1–20
Facts 1–20
∞
Unlimited Practice
0%
Local Progress
−
EXAMPLE
500 − 275 = 225
FACT
12 − 7 = 5
MASTER
10,000 − 4,725
01 — LEARN
Learning Modules
Build subtraction fluency step by step — from simple facts to multi-digit, decimal, fraction and real-world subtraction.
02
Subtraction Facts 1–20
Build fast recall of essential subtraction facts.
03
Number Bonds & Fact Families
Connect addition and subtraction through related facts.
04
Counting Back
Use backward counting to solve subtraction efficiently.
05
Counting Up
Use the count-up strategy to find differences.
06
Number Lines
Visualize subtraction as movement along a number line.
07
Make 10 / Bridge to 10
Break problems into friendly numbers around ten.
08
Mental Subtraction
Develop flexible mental calculation strategies.
09
Column Subtraction
Learn organized written subtraction methods.
10
Regrouping / Borrowing
Master regrouping across place values.
11
2-Digit Subtraction
Subtract two-digit numbers accurately.
12
3-Digit Subtraction
Work confidently with hundreds, tens and ones.
13
Long Subtraction
Solve larger multi-digit subtraction problems.
14
Decimal Subtraction
Subtract decimals using place-value alignment.
15
Fraction Subtraction
Subtract like and unlike fractions.
16
Integer Subtraction
Understand positive and negative subtraction.
17
Money & Real Life
Apply subtraction to prices, change and budgets.
18
Measurement & Word Problems
Use subtraction with length, time, mass and real situations.
19
Challenge Mode
Push your speed, accuracy and reasoning.
20
Exam Mastery
Combine every subtraction strategy for assessment success.
02 — TOOLS
Interactive Subtraction Lab
Interactive tools designed to make subtraction visible, practical and measurable.
Subtraction Calculator
Result
225
Number Line Lab
Result
5
Column Subtraction Lab
502 − 278
502
278
224
−
Fact Trainer
FACT TRAINER
15 − 7 = ?
03 — PRACTICE
Subtraction Practice Arena
Practice generated subtraction problems and build a personal mastery record directly in your browser.
Question
84 − 37 = ?
Mastery
Score
0
Accuracy
0%
Streak
0
Best Streak
0
Mastery
0%
⚡ Smart Practice
Answer, check, learn and repeat. Your progress stays on this device.
04 — ROADMAP
Your Subtraction Roadmap
Follow a structured path from foundation to complete subtraction mastery.
01
Foundation
Understand subtraction meaning, symbols and number relationships.
02
Fact Fluency
Master subtraction facts and fact families.
03
Mental Math
Use number lines, counting and friendly-number strategies.
04
Written Methods
Build column subtraction and regrouping confidence.
05
Advanced Numbers
Handle decimals, fractions and integers.
06
Real Applications
Solve money, measurement and word problems.
07
Challenge
Increase speed, accuracy and reasoning.
08
Mastery
Combine every strategy for complete subtraction fluency.
05 — STRATEGIES
Smart Subtraction Strategies
Choose the right strategy for the numbers in front of you.
Count Back
Move backward from the larger number.
Count Up
Count from the smaller number toward the larger number.
Make 10
Break numbers around ten for easier mental subtraction.
Break Apart
Split a number into place-value parts.
Compensation
Adjust with a friendly number, then correct.
Regroup
Exchange one place-value unit for ten smaller units.
Estimate First
Estimate before calculating to catch mistakes.
Check by Addition
Add the difference back to verify the result.
06 — RESOURCES
Learning Resources
Quick references for formulas, place value, checking and subtraction methods.
Subtraction Formula
Minuend − Subtrahend = Difference
Regrouping Rule
1 ten = 10 ones; 1 hundred = 10 tens
Checking Rule
Difference + Subtrahend = Minuend
Number Line
Subtraction moves left when taking away.
Decimal Rule
Align decimal points before subtracting.
Fraction Rule
Use common denominators before subtracting unlike fractions.
07 — NETWORK
E-Learning Network
Move between connected E-Learning Network mathematics and technology hubs.