Education
Math
- Arithmetic
  - Addition
    - Basic Addition 40
    - Carrying Over 4
    - Word Problems 291
    - Mental Math 115
    - Large Numbers 10
  - Subtraction
    - Basic Subtraction 25
    - Borrowing 5
    - Number Line 11
  - Multiplication
    - Times Tables 41
    - Multi Digit 8
    - Area Models 7
    - Estimation 12
  - Division
    - Basic Division 13
    - Long Division 4
    - Remainders 7
  - Fractions
    - Fraction Basics 25
    - Equivalent Fractions 4
    - Comparing Fractions 18
    - Fraction Operations 30
    - Mixed Numbers 10
  - Decimals
    - Decimal Basics 44
    - Place Value 52
    - Decimal Operations 45
    - Comparing Decimals 41
    - Rounding Decimals 22
  - Percentages
    - Percent Basics 20
    - Finding Percents 33
    - Percent Increase 4
    - Percent Decrease 5
    - Real Life Percent 5
  - Ratios & Proportions
    - Ratio Basics 20
    - Simplifying Ratios 5
    - Proportion Basics 11
    - Solving Proportions 13
    - Real World Ratios 6
  - Exponents & Roots
    - Exponent Basics 7
    - Powers of Ten 8
    - Square Roots 16
    - Cube Roots 8
    - Exponent Rules 46
  - Order of Operations
    - PEMDAS 8
    - Nested Expressions 8
    - With Exponents 7
    - Multi Step Problems 38
- Algebra
  - Algebraic Expressions
    - Algebraic Terms 60
    - Simplifying Expressions 30
    - Like Terms 6
    - Distributive Property 16
    - Evaluating Expressions 35
  - Linear Equations
    - One Variable Equations 52
    - Two Variable Equations 12
    - Solving Equations 46
    - Graphing Lines 43
  - Quadratic Equations
    - Quadratic Form 4
    - Factoring Method 12
    - Quadratic Formula 9
    - Completing Square 8
    - Graphing Parabolas 12
  - Polynomials
    - Polynomial Basics 12
    - Polynomial Operations 22
    - Degree of Polynomial 6
    - Polynomial Identities 5
  - Factoring
    - Common Factors 12
    - Difference of Squares 5
    - Trinomial Factoring 12
    - Grouping Method 5
    - Special Products 11
  - Inequalities
    - Linear Inequalities 9
    - Compound Inequalities 5
    - Graphing Inequalities 3
    - Absolute Inequalities 16
  - Algebraic Functions
    - Function Basics 19
    - Domain & Range 11
    - Evaluating Functions 30
    - Function Graphs 19
    - Function Notation 8
  - Systems of Equations
    - Solving by Graphing 8
    - Substitution Method 3
    - Elimination Method 6
    - Real World Systems 14
    - No Infinite Solutions 1
  - Exponential & Logarithmic
    - Exponential Growth 1
    - Exponential Decay 5
    - Logarithm Basics 6
    - Logarithm Properties 13
  - Complex Numbers
    - Imaginary Unit 3
    - Complex Operations 3
    - Complex Conjugates 6
    - Polar Form 5
    - Quadratic with Complex 1
- Geometry
  - Geometry Basics
    - Undefined Terms 23
    - Line Segments 9
    - Mathematical Rays 29
    - Intersections 6
    - Midpoint Formula 7
    - Distance Formula 9
  - Angles
    - Angle Types 25
    - Complementary Angles 14
    - Vertical Angles 5
    - Angle Bisector 4
    - Angle Addition 19
  - Triangles
    - Triangle Types 6
    - Angle Sum 10
    - Triangle Inequality 5
    - Triangle Congruence 12
    - Special Triangles 17
    - Pythagoras Theorem 25
    - Triangle Centers 7
    - Medians & Altitudes 5
  - Quadrilaterals
    - Types of Quads 5
    - Quad Properties 13
    - Midsegment Rule 5
    - Coordinate Proofs 31
  - Circles
    - Circle Parts 18
    - Arcs & Angles 16
    - Inscribed Angles 13
    - Arc Length 14
    - Circle Equation 11
    - Tangents 5
  - Polygons
    - Polygon Types 6
    - Angle Sums 16
    - Regular Polygons 5
    - Polygon Diagonals 13
    - Tessellations 11
  - Perimeter & Area
    - Perimeter 7
    - Area Formulas 26
    - Composite Areas 5
    - Circle Area 7
    - Herons Formula 12
  - Surface Area & Volume
    - Surface Area 5
    - Volume of Solids 20
    - Composite Solids 6
    - Math Density 5
    - Cross Sections 25
  - Coordinate Geometry
    - Metric Distance 11
    - Midpoint 5
    - Slope 17
    - Line Equation 8
  - Transformations
    - Geometric Translation 6
    - Geometric Rotation 4
    - Geometric Reflection 6
    - Dilation 7
    - Symmetry 6
    - Similarity 7
- Trigonometry
  - Trigonometric Ratios
    - Sine Cosine Tangent 6
    - Reciprocal Ratios 5
    - Right Triangle Ratios 4
    - Triangle Sides 5
  - Trigonometric Identities
    - Pythagorean Identities 3
    - Reciprocal Identities 3
    - Quotient Identities 3
    - Co Function Identities 7
    - Even Odd Identities 3
    - Double Angle Formulas 3
    - Half Angle Formulas 5
    - Sum & Difference 4
  - Trig Graphs
    - Sine Graph 1
    - Cosine Graph 5
    - Cotangent Graph 3
    - Secant Graph 3
    - Cosecant Graph 5
    - Amplitude & Period 5
    - Phase Shift 3
    - Vertical Shift 3
  - Inverse Trig
    - Inverse Sine 3
    - Inverse Cosine 5
    - Inverse Tangent 3
    - Graphs of Inverses 5
    - Principal Values 2
    - Real World Use 5
  - Solving Triangles
    - SOHCAHTOA Method 6
    - Law of Sines 5
    - Law of Cosines 9
    - Ambiguous Case 6
    - Finding Angles 5
    - Area of Triangle 5
    - Heron Formula 3
  - Real World Applications
    - Heights & Distances 5
    - Angle of Elevation 5
    - Angle of Depression 3
    - Navigation Bearings 5
    - Shadows & Towers 3
    - Sound & Light Waves 3
    - Engineering Design 5
    - Astronomy & Orbits 3
- Calculus
  - Limits
    - Limit Basics 2
    - Algebraic Limits 4
  - Derivatives
    - Definition of Derivative 19
    - Power Rule 1
    - Quotient Rule 2
    - Chain Rule 10
    - Derivatives of Trig 5
    - Implicit Differentiation 1
    - Higher Order Derivatives 3
    - Tangents & Slopes 6
    - Optimization Problems 10
  - Integrals
    - Definite Integrals 10
    - Fundamental Theorem 8
    - Integration by Substitution 2
    - Area Under Curve 2
    - Volumes of Solids 7
    - Integration of Trig 1
  - Differential Equations
    - First Order Equations 4
    - Exact Equations 4
    - Homogeneous Equations 1
    - Applications in Motion 6
  - Sequences & Series
    - Arithmetic Sequences 39
    - Geometric Sequences 6
    - Convergence Tests 6
    - Infinite Series 3
    - Partial Sums 1
  - Multivariable Calculus
    - Partial Derivatives 2
    - Double Integrals 7
    - Triple Integrals 3
    - Vector Fields 7
    - Surface Integrals 1
- Statistics & Probability
  - Data Handling
    - Types of Data 22
    - Primary Secondary Data 6
    - Frequency Tables 5
    - Bar Graphs 7
    - Pie Charts 7
    - Line Graphs 8
    - Histograms 7
    - Stem & Leaf 6
    - Dot Plots 4
  - Central Tendency
    - Arithmetic Mean 33
    - Median 7
    - Mode 7
    - Weighted Mean 3
    - Grouped Data Mean 10
  - Data Dispersion
    - Range 3
    - Interquartile Range 6
    - Variance 3
    - Standard Deviation 4
    - Mean Absolute Deviation 3
    - Box & Whisker 6
  - Probability Concepts
    - Theoretical Probability 9
    - Experimental Probability 7
    - Sample Space 6
    - Mutually Exclusive Events 5
    - Independent Events 6
    - Conditional Probability 6
    - Complementary Events 6
  - Probability Distributions
    - Binomial Distribution 6
    - Normal Distribution 1
    - Cumulative Distribution 1
    - Expected Value 3
  - Inferential Statistics
    - Population & Sample 1
    - Sampling Methods 7
    - Hypothesis Testing 20
    - Confidence Intervals 5
    - Margin of Error 2
    - Z & T Tests 18
    - Chi Square Test 8
- Number Theory
  - Prime Numbers
    - Prime Basics 5
    - Prime Factorization 8
    - Sieve of Eratosthenes 3
    - Twin Primes 3
    - Primality Tests 4
  - Divisibility Rules
    - Divisibility by 2 8
    - Rules Application 5
    - Remainder Concepts 5
    - Number Puzzles 24
    - Divisibility Proofs 4
  - GCD & LCM
    - GCD Basics 3
    - LCM Basics 5
    - Euclidean Algorithm 5
    - GCD LCM Practice 4
    - Coprime Numbers 5
  - Modular Arithmetic
    - Congruence 9
    - Modulo Basics 3
    - Congruence Relations 3
    - Modular Addition 3
    - Modular Multiplication 5
    - Modular Inverses 5
  - Diophantine Equations
    - Integer Solutions 18
    - Pythagorean Triples 5
- Mathematical Topology
  - Set Types
    - Closed Sets 5
  - Continuity
    - Continuous Functions 2
  - Compactness
    - Compact Sets 5
    - Open Covers 4
  - Connectedness
  - Metric Spaces
    - Metric Definition 5
- Combinatorics
  - Permutations
    - Permutation Basics 4
    - With Repetition 5
    - Circular Permutations 8
    - Permutation Problems 7
  - Combinations
  - Pigeonhole
    - Generalized Form 4
    - Number Problems 12
    - Logical Deductions 13
  - Inclusion Exclusion
    - Venn Diagram Use 6
    - Advanced Problems 5
  - Graph Theory
    - Graph Terminology 2
    - Types of Graphs 5
    - Degree of Vertex 1
    - Euler Paths 1
    - Hamiltonian Paths 2
    - Graph Representations 7
- Mathematical Logic
  - Propositional Logic
    - Logical Statements 3
    - Truth Tables 3
    - Tautologies 3
    - Contradictions 1
  - Predicate Logic
    - Existential Statements 2
    - Validity & Models 1
  - Set Theory
    - Set Notation 5
    - Venn Diagrams 5
    - Union & Intersection 5
    - Subsets & Power Sets 5
    - Complements & Differences 5
    - Cartesian Products 2
  - Proof Techniques
    - Case Analysis 1
    - Counterexamples 1
  - Boolean Algebra
    - Boolean Variables 2
    - Boolean Laws 1
    - Karnaugh Maps 5
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Estimation Quizzes, Questions & Answers

Recent Estimation Quizzes

This quiz is used as part of an eLearning program. If you can pass it, you don't need to proceed with the rest of the multiplication tutorial.

Questions: 7 | Attempts: 868 | Last updated: Sep 17, 2025

Sample Question
Which of the following symbols represents multiplication?

+

-

X

÷

=

Math Quiz On Basic Multiplication!

Math Quiz on Basic Multiplication!

Do you love solving mathematical calculations? Are you smart enough to calculate numbers in mind? Can you multiply big numbers in mind without using a calculator? If yes, then do attempt this quiz to test how fast and sharp you...

Questions: 10 | Attempts: 1324 | Last updated: Mar 21, 2025

Sample Question
130+120=

156

145

150

123

457

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