Education
Math
- Arithmetic
  - Addition
    - Basic Addition 68
    - Carrying Over 1
    - Word Problems 109
    - Mental Math 20
    - Large Numbers 13
  - Subtraction
    - Basic Subtraction 57
    - Borrowing 11
    - Number Line 9
  - Multiplication
    - Times Tables 22
    - Multi Digit 8
    - Area Models 5
    - Estimation 17
  - Division
    - Basic Division 26
    - Long Division 7
    - Remainders 4
  - Fractions
    - Fraction Basics 5
    - Equivalent Fractions 5
    - Comparing Fractions 9
    - Fraction Operations 55
    - Mixed Numbers 10
  - Decimals
    - Decimal Basics 5
    - Place Value 45
    - Decimal Operations 37
    - Comparing Decimals 8
    - Rounding Decimals 28
  - Percentages
    - Percent Basics 7
    - Finding Percents 28
    - Percent Increase 3
    - Percent Decrease 9
    - Real Life Percent 5
  - Ratios & Proportions
    - Ratio Basics 2
    - Simplifying Ratios 9
    - Proportion Basics 2
    - Solving Proportions 14
    - Real World Ratios 3
  - Exponents & Roots
    - Exponent Basics 3
    - Square Roots 21
    - Cube Roots 5
    - Exponent Rules 23
  - Order of Operations
    - PEMDAS 1
    - Nested Expressions 3
    - With Exponents 13
    - Multi Step Problems 13
- Algebra
  - Algebraic Expressions
    - Algebraic Terms 4
    - Simplifying Expressions 43
    - Like Terms 6
    - Distributive Property 11
    - Evaluating Expressions 15
  - Linear Equations
    - One Variable Equations 13
    - Two Variable Equations 4
    - Solving Equations 41
    - Graphing Lines 13
  - Quadratic Equations
    - Quadratic Form 6
    - Factoring Method 11
    - Quadratic Formula 2
    - Completing Square 4
    - Graphing Parabolas 12
  - Polynomials
    - Polynomial Basics 3
    - Polynomial Operations 17
    - Degree of Polynomial 2
    - Polynomial Identities 6
  - Factoring
    - Common Factors 10
    - Difference of Squares 1
    - Trinomial Factoring 6
    - Special Products 2
  - Inequalities
    - Linear Inequalities 17
    - Compound Inequalities 1
    - Graphing Inequalities 6
    - Absolute Inequalities 6
  - Algebraic Functions
    - Function Basics 11
    - Domain & Range 6
    - Evaluating Functions 7
    - Function Graphs 12
    - Function Notation 2
  - Systems of Equations
    - Solving by Graphing 5
    - Substitution Method 6
    - Elimination Method 2
    - Real World Systems 2
    - No Infinite Solutions 2
  - Exponential & Logarithmic
    - Exponential Growth 4
    - Exponential Decay 2
    - Logarithm Basics 11
    - Logarithm Properties 16
  - Complex Numbers
    - Complex Operations 2
    - Complex Conjugates 1
    - Polar Form 6
    - Quadratic with Complex 2
- Geometry
  - Geometry Basics
    - Undefined Terms 3
    - Line Segments 4
    - Mathematical Rays 1
    - Intersections 3
    - Midpoint Formula 2
    - Distance Formula 3
  - Angles
    - Angle Types 26
    - Complementary Angles 13
    - Vertical Angles 7
    - Angle Bisector 4
    - Angle Addition 4
  - Triangles
    - Triangle Types 7
    - Angle Sum 3
    - Triangle Inequality 6
    - Triangle Congruence 14
    - Special Triangles 8
    - Pythagoras Theorem 18
    - Triangle Centers 4
    - Medians & Altitudes 6
  - Quadrilaterals
    - Types of Quads 1
    - Quad Properties 14
    - Midsegment Rule 5
  - Circles
    - Circle Parts 4
    - Arcs & Angles 2
    - Inscribed Angles 2
    - Arc Length 1
    - Circle Equation 3
    - Tangents 1
  - Polygons
    - Polygon Types 13
    - Angle Sums 7
    - Regular Polygons 5
    - Polygon Diagonals 3
    - Tessellations 4
  - Perimeter & Area
    - Perimeter 18
    - Area Formulas 10
    - Composite Areas 6
    - Circle Area 11
  - Surface Area & Volume
    - Surface Area 4
    - Volume of Solids 11
    - Composite Solids 8
    - Math Density 2
    - Cross Sections 5
  - Coordinate Geometry
    - Metric Distance 2
    - Midpoint 5
    - Slope 7
    - Line Equation 10
  - Transformations
    - Geometric Translation 10
    - Geometric Rotation 1
    - Geometric Reflection 3
    - Dilation 5
    - Symmetry 5
    - Similarity 9
- Trigonometry
  - Trigonometric Ratios
    - Sine Cosine Tangent 5
    - Reciprocal Ratios 4
    - Right Triangle Ratios 4
    - Triangle Sides 9
  - Trigonometric Identities
    - Pythagorean Identities 6
    - Reciprocal Identities 5
    - Quotient Identities 5
    - Co Function Identities 1
    - Even Odd Identities 5
    - Double Angle Formulas 5
    - Half Angle Formulas 4
    - Sum & Difference 4
  - Trig Graphs
    - Sine Graph 4
    - Cosine Graph 5
    - Tangent Graph 2
    - Cotangent Graph 5
    - Secant Graph 5
    - Cosecant Graph 2
    - Amplitude & Period 4
    - Phase Shift 5
    - Vertical Shift 5
  - Inverse Trig
    - Inverse Sine 5
    - Inverse Cosine 4
    - Inverse Tangent 6
    - Graphs of Inverses 4
    - Principal Values 4
    - Real World Use 2
  - Solving Triangles
    - SOHCAHTOA Method 8
    - Law of Sines 5
    - Law of Cosines 3
    - Ambiguous Case 2
    - Finding Sides 3
    - Finding Angles 4
    - Area of Triangle 5
    - Heron Formula 5
  - Real World Applications
    - Heights & Distances 3
    - Angle of Elevation 6
    - Angle of Depression 5
    - Navigation Bearings 5
    - Shadows & Towers 5
    - Sound & Light Waves 5
    - Engineering Design 4
    - Astronomy & Orbits 5
- Calculus
  - Limits
    - Limit Basics 4
    - One Sided Limits 5
    - Infinite Limits 5
    - Limits at Infinity 6
    - Piecewise Functions 7
    - lhopitals Rule 5
  - Derivatives
    - Definition of Derivative 4
    - Power Rule 4
    - Product Rule 11
    - Quotient Rule 3
    - Chain Rule 2
    - Derivatives of Trig 5
    - Implicit Differentiation 6
    - Tangents & Slopes 4
    - Optimization Problems 4
  - Integrals
    - Indefinite Integrals 7
    - Definite Integrals 2
    - Fundamental Theorem 3
    - Integration by Substitution 4
    - Integration by Parts 6
    - Improper Integrals 5
    - Integration of Trig 1
  - Differential Equations
    - First Order Equations 4
    - Separable Equations 5
    - Exact Equations 1
    - Homogeneous Equations 4
    - Growth & Decay 5
  - Sequences & Series
    - Arithmetic Sequences 51
    - Geometric Sequences 8
    - Convergence Tests 1
    - Infinite Series 3
    - Partial Sums 4
    - Power Series 6
    - Taylor Series 5
    - Maclaurin Series 5
  - Multivariable Calculus
    - Partial Derivatives 4
    - Gradient Vectors 8
    - Vector Fields 1
    - Line Integrals 5
    - Divergence & Curl 5
- Statistics & Probability
  - Data Handling
    - Types of Data 17
    - Primary Secondary Data 1
    - Frequency Tables 3
    - Bar Graphs 5
    - Pie Charts 8
    - Line Graphs 16
    - Histograms 7
    - Stem & Leaf 6
    - Dot Plots 9
  - Central Tendency
    - Arithmetic Mean 6
    - Median 15
    - Mode 6
    - Weighted Mean 3
  - Data Dispersion
    - Range 5
    - Interquartile Range 6
    - Variance 5
    - Standard Deviation 1
    - Mean Absolute Deviation 6
    - Box & Whisker 3
  - Probability Concepts
    - Theoretical Probability 2
    - Experimental Probability 5
    - Sample Space 6
    - Mutually Exclusive Events 6
    - Independent Events 7
    - Conditional Probability 5
    - Complementary Events 5
  - Probability Distributions
    - Probability Tables 3
    - Binomial Distribution 6
    - Normal Distribution 9
    - Uniform Distribution 2
    - Poisson Distribution 2
    - Cumulative Distribution 5
  - Inferential Statistics
    - Population & Sample 5
    - Sampling Methods 12
    - Hypothesis Testing 16
    - Confidence Intervals 4
    - Margin of Error 7
    - Z & T Tests 3
    - Chi Square Test 3
- Number Theory
  - Prime Numbers
    - Prime Basics 6
    - Prime Factorization 13
    - Sieve of Eratosthenes 5
    - Twin Primes 5
    - Primality Tests 1
  - Divisibility Rules
    - Divisibility by 2 6
    - Rules Application 2
    - Remainder Concepts 6
    - Number Puzzles 2
    - Divisibility Proofs 5
  - GCD & LCM
    - GCD Basics 5
    - LCM Basics 5
    - Euclidean Algorithm 4
    - GCD LCM Practice 2
    - Coprime Numbers 2
  - Modular Arithmetic
    - Congruence 9
    - Modulo Basics 5
    - Congruence Relations 6
    - Modular Addition 5
    - Modular Multiplication 3
    - Modular Inverses 3
    - Math in Coding 2
  - Diophantine Equations
    - Pythagorean Triples 3
- Mathematical Topology
  - Set Types
    - Open Sets 4
    - Closed Sets 4
    - Interior Points 3
    - Closure of Sets 3
    - Boundary Points 3
    - Limit Points 3
  - Continuity
  - Compactness
    - Compact Sets 3
    - Open Covers 4
  - Connectedness
    - Connected Sets 3
    - Disconnected Sets 3
    - Path Connectedness 3
    - Connected Components 3
    - Continuous Images 3
  - Metric Spaces
    - Metric Definition 2
    - Open Balls 3
    - Convergence in Metric 3
    - Completeness 3
    - Boundedness 4
    - Induced Mathematical Topology 3
- Combinatorics
  - Permutations
    - Permutation Basics 3
    - Without Repetition 5
    - With Repetition 2
    - Circular Permutations 1
    - Permutation Problems 1
  - Combinations
  - Pigeonhole
    - Basic Principle 5
    - Generalized Form 3
    - Number Problems 1
  - Inclusion Exclusion
    - Principle Basics 5
    - Two Sets 5
    - Three Sets 4
    - Venn Diagram Use 5
    - Advanced Problems 2
  - Graph Theory
    - Graph Terminology 4
    - Types of Graphs 2
    - Degree of Vertex 5
    - Euler Paths 4
    - Hamiltonian Paths 3
    - Graph Representations 3
- Mathematical Logic
  - Propositional Logic
    - Logical Statements 9
    - Truth Tables 4
    - Logical Connectives 4
    - Tautologies 1
    - Contradictions 5
    - Logical Equivalence 5
  - Predicate Logic
    - Predicate Statements 4
    - Logical Quantifiers 4
    - Universal Statements 4
    - Existential Statements 6
    - Validity & Models 5
  - Set Theory
    - Set Notation 4
    - Venn Diagrams 7
    - Union & Intersection 4
    - Subsets & Power Sets 5
    - Complements & Differences 3
    - Cartesian Products 4
    - Countable Sets 3
  - Proof Techniques
    - Direct Proof 4
    - Contrapositive Proof 4
    - Contradiction Method 4
    - Inductive Proof 4
    - Case Analysis 4
    - Counterexamples 4
  - Boolean Algebra
    - Boolean Variables 5
    - Boolean Laws 4
    - Simplification Rules 4
    - Logic Circuits 4
    - Karnaugh Maps 3
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7th Grade Number Problems Quizzes, Questions & Answers

7th Grade

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How Well Do You Know Postage Stamp Problem?

How well do you know Postage Stamp Problem?

The postage stamp problem can be explained as a mathematical riddle that questions the smallest postage value that cannot find a place on an envelope. Especially if the envelope is limited to only a number of stamps with...

Questions: 10 | Attempts: 149 | Last updated: Mar 21, 2025

Sample Question
Under which kind of mathematical problem does it fall?

Equation

Mathematical riddle

Trinomial problem

Polynomial problem

7th Grade Number Problems Quizzes, Questions & Answers

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