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YEAR 9

Explore more than 150, Year 9 Math concepts with Learndigo! Hover over any technique to preview, then click to start refining your understanding.

Number theory

  • Learn - Factors
  • 1.1 - Find the factors of the given numbers
  • Learn - Divisibility rules
  • 1.2 - Lets revise the Divisibility rules
  • Learn - Prime and Composite number
  • 1.3 - Is this a prime or composite number?
  • Learn - Prime Factorization
  • 1.4 - Find the Prime factors of the given numbers
  • Learn - HCF & LCM
  • 1.5 - Find the Highest common factor (HCF) of given numbers
  • 1.6 - Find the lowest common factors (LCM) of the given numbers
  • Learn - Numbers
  • 1.7- Classify numbers

Integers

  • Learn - Integers, number line and absolute value
  • 2.1 - Find the opposite values of the given integers
  • 2.2 - Integer inequalities with absolute values
  • Learn - Positive and negative numbers
  • 2.3 - Positive and negative numbers
  • 2.4 - Putting integers on number line

Operations with integers

  • Learn - Addition and Subtraction of Integers
  • 3.1 - Adding and subtracting the integers
  • 3.2 - Adding and subtracting the integers Part-2
  • 3.3 - Add and subtract three or more integers
  • 3.4 - Multiply and divide the integers
  • Learn - Multiplication and Division of Integers
  • 3.5 - Multiply and divide the integers Part-2
  • Learn - BODMAS rule
  • 3.6 - Evaluate numerical expressions involving integers
  • 3.7 - Division

Rational numbers

  • Learn - Rational or Irrational number
  • 4.1 - Identify rational and irrational numbers
  • Learn - Least Common Denominator
  • 4.2 - Find the lowest common denominator
  • Learn - Absolute value of rational
  • 4.3 - Find the absolute value of rational numbers
  • 4.4 - Convert between decimals and fractions or mixed numbers
  • 4.5 - Compare rational numbers
  • Learn - Rationalizing and subtracting the denominator
  • 4.6 - Rationalizing the denominator
  • 4.7 - Subtracting denominator

Operations with rational numbers

  • Learn - Adding and subtracting rational numbers
  • 5.1 - Find the reciprocals and multiplicative inverses
  • 5.2 - Adding and subtracting rational numbers
  • 5.3 - Adding and subtracting rational numbers: word problems
  • Learn - Dividing and multiplying rational numbers
  • 5.4 - Multiplying and dividing rational numbers
  • 5.5 - Evaluate numerical expressions involving rational numbers
  • 5.6 - Division of fractions

Exponents and roots

  • Learn - Exponents
  • 6.1 - Evaluating and converting into exponential form
  • 6.2 - Evaluate exponents
  • 6.3 - Evaluate the equations to find the values
  • 6.4 - Evaluating exponents with negative bases
  • 6.5 - Evaluating exponents with decimal and fractional bases
  • 6.6 - Evaluate bases with negative exponents
  • 6.7 - Find the square roots of perfect squares
  • 6.8 - Positive and negative square roots
  • Learn - Square root of perfect square
  • 6.9 - Find the square root of the exponential value
  • 6.10 - Find the cube roots of perfect cubes

Standard form

  • Learn - Scientific notation
  • 7.1 - Converting scientific notation and standard form
  • Learn - Correct sign
  • 7.2 - Select the correct the sign
  • 7.3 - Scientific notation examples

Ratios, rates and proportions

  • Learn - Ratio
  • 8.1 - Are these ratios equal?
  • 8.2 - Write a number to make the rations identical
  • 8.3 - Find the unit rates
  • Learn - Proportion
  • 8.4 - Do the ratios form a proportion?
  • 8.5 - Evaluate the proportions to find the value
  • 8.6 - Evaluate word problems by proportional method
  • 8.7 - Rationalizing

Percents

  • Learn - Percentage to Fractions and Decimals
  • 9.1 - Convert between percent, fractions and decimals
  • 9.2 - Compare percentages to fractions and decimals
  • Learn - Percent and Proportions
  • 9.3 -Find the Percentage of numbers and money amounts
  • 9.4 - Compare the percentages of numbers
  • 9.5 - Evaluate percentages for the number

Consumer maths

  • Learn - Price
  • 10.1 - Find the total price from the Price lists
  • 10.2 - Find the price of a unit
  • 10.3 - Find the total price from a unit
  • 10.4 - Find the percentage of discount and mark-up
  • 10.5 - Find the percentage for VAT, discount and more

Units of measurement

  • Learn - Unit Conversion
  • 11.1 - Convert the quantities on the basis of units
  • 11.2 - Convert the quantities on the basis on the units
  • 11.3 - Convert between square meters and hectares
  • 11.4 - Convert between cubic metres and litres
  • Learn - Precision
  • 11.5 - Introduction to precision
  • 11.6 - Imperial mixed units
  • 11.7 - Convert between metric and imperial units

Problem solving

  • Learn - Problem solving
  • 12.1 - Mixed word problems
  • 12.2 - Guess-and-check word problems
  • Learn - Elapsed time problem solving
  • 12.3 - Elapsed time word proble
  • 12.4 - Problems

Two-dimensional figures

  • Learn - Triangle
  • 13.1 - Identify and classify polygons
  • 13.2 - What type of triangle is this?
  • 13.3 - Can you identify a trapezium?
  • 13.4 - Name the quadrilaterals
  • 13.5 - Find missing angles in triangles and quadrilaterals
  • 13.6 - Find the interior angles of polygons
  • Learn - Supplementary angle and Complementary angle
  • 13.7 - Find the complementary, supplementary, vertical and adjacent angles
  • 13.8 - Sum of interior and exterior angle

Pythagoras' theorem

  • Learn - Pythagoras theorem
  • 14.1 - Pythagoras' theorem: find the length of the hypotenuse
  • 14.2 - Pythagoras' theorem: find the missing leg length
  • 14.3 - Pythagoras' theorem: find the perimeter
  • 14.4 - Pythagoras' theorem examples

Expressions and properties

  • Learn – Expression
  • 15.1 - Make a variable expressions from the given data
  • 15.2 - Evaluate one-variable expressions
  • Learn - Algebric expression
  • 15.3 - Algebraic expression

Statistics

  • Learn - Mean, Median, Mode and Range
  • 16.1 - Calculate mean, median, mode and range
  • 16.2 - Study the charts to find mean, median, mode and range
  • 16.3 - Mean, median, mode and range: find the missing number
  • 16.4 - Changes in mean, median, mode and range
  • Learn – Quartiles
  • 16.5 - Find the quartiles
  • 16.6 - Identify representative, random and biased samples

One-variable inequalities

  • Learn – Inequalities
  • 17.1 - Find the values of inequalities
  • 17.2 - Make inequalities from number lines
  • 17.3 - Solve one-step inequalities
  • 17.4 - Solve two-step linear inequalities
  • 17.5 - Solve multi-step inequalities
  • Learn - Quadratic Inequalities
  • 17.6 - Quadratic inequalities

One-variable equations

  • Learn - One variable equation
  • 18.1 - Find the values to satisfy the equation
  • 18.2 - Form an equation from words
  • 18.3 - Write and solve equations that represent diagrams
  • 18.4 - Solve one-step equations
  • 18.5 - Solve two-step equations
  • 18.6 - Solve multi-step equations
  • 18.7 - Solve multi-step equations
  • 18.8 - Solve equations involving like terms
  • 18.9 - Solve equations with variables on both sides
  • 18.10 - Solve equations: mixed review
Discover more than 110, Year 9 English lessons with Learndigo! Hover to preview, then click to start practising and improving your knowledge.

Sentence structure

  • Learn - Sentence Structure
  • 1.1 - Is the sentence declarative, interrogative, imperative or exclamatory?
  • 1.2 - Is it a direct object or an indirect object?
  • 1.3 - Is it a complete sentence or a fragment?
  • 1.4 - Is it a complete sentence or a run-on?
  • 1.5 - Is it a complete sentence, a fragment or a run-on?
  • 1.6 - Is it a phrase or a clause?
  • 1.8 - Complete sentence and predicate
  • 1.9 - Compound predicate
  • Learn - Types of Sentences
  • 1.7 - Is the sentence simple, compound, complex or compound-complex?

Nouns

  • Learn – Nouns
  • 2.1 - Identify plurals, singular possessives and plural possessives
  • 2.2 - Form plurals of nouns ending in f, fe, o and y
  • 2.3 - Form plurals: review
  • 2.4 - Identify and correct errors with plural and possessive nouns
  • 2.5 - Singular or plural possessive
  • 2.6 - Compound nouns and possessive forms

Pronouns and antecedents

  • Learn – Pronouns
  • 3.1 - Choose between subject and object pronouns
  • 3.2 - Compound subjects and objects with 'I' and 'me'
  • 3.3 - Compound subjects and objects with pronouns
  • 3.4 - Choose between personal and reflexive pronouns
  • 3.5 - Is the pronoun reflexive or intensive?
  • 3.6 - Identify vague pronoun references
  • 3.7 - Use reflexive pronouns
  • 3.8 - Use relative pronouns: who and whom
  • 3.9 - Use relative pronouns: who, whom, whose, which and that
  • 3.10 - Use the pronoun that agrees with the antecedent
  • 3.11 - Pronouns and their antecedents
  • 3.12 - Determine all possible antecedents

Active/Passive and Verbs

  • Learn - Active, Passive, and Verbs
  • 4.1 - Use the correct verb with compound subjects
  • 4.2 - Identify active and passive voice
  • 4.3 - Identify linking verbs, predicate adjectives and predicate nouns
  • 4.4 - Rewrite the sentence in active voice
  • 4.5 - Correct errors with subject-verb agreement
  • 4.6 - Correct errors with indefinite pronoun-verb agreement
  • 4.7 - Forming compound subjects and verbs
  • 4.8 - Infinitive phrases

Adjectives and adverbs

  • Learn - Adjectives and Adverbs
  • 5.1 - Order adjectives
  • 5.2 - Choose between adjectives and adverbs
  • 5.3 - Is the word an adjective or adverb?
  • 5.4 - Transitions with conjunctive adverbs
  • 5.5 - Identify adjectives
  • 5.6 - Identify adverbs
  • 5.7 - Degree of adjective and adverb

Punctuation

  • Learn – Punctuation
  • 6.1 - Formatting titles
  • 6.2 - Formatting and capitalising titles: review
  • 6.3 - Use semicolons and commas to separate clauses
  • 6.4 - Use semicolons, colons and commas with lists
  • 6.5 - Decide whether ellipses are used appropriately
  • 6.6 - Capitalising titles
  • 6.7 - Coordinating and non-coordinating adjectives
  • 6.8 - Hyphens and dashes

Prefixes and suffixes

  • Learn – Affixation
  • 7.1 - Words with pre-
  • 7.2 - Words with re-
  • 7.3 - Words with sub-
  • 7.4 - Words with mis-
  • 7.5 - Words with un-, dis-, in-, im- and non-
  • 7.6 - Words with -ful
  • 7.7 - Words with -less
  • 7.8 - Words with -able and -ible
  • 7.9 - Affixation review

Greek and Latin roots

  • Learn - Greek and Latin Roots
  • 8.1 - Use Greek and Latin roots as clues to the meanings of words
  • 8.2 - Use words as clues to the meanings of Greek and Latin roots
  • 8.3 - Determine the meanings of Greek and Latin roots
  • 8.4 - Determine the meanings of words with Greek and Latin roots

Reference skills

  • Learn - Dictionary Skills
  • 9.1 - Alphabetical order
  • 9.2 - Use guide words
  • 9.3 - Use thesaurus entries

Word relationships and usage

  • Learn - Thesaurus and Connotation
  • 10.1 - Choose the synonym
  • 10.2 - Choose the antonym
  • 10.3 - Describe the difference between related words
  • 10.4 - Positive and negative connotation
  • Learn - Homophones and Analogy
  • 10.5 - Use the correct homophone
  • 10.6 - Use the correct frequently confused word
  • 10.7 - Analogies
  • 10.8 - Analogies: challenge
  • 10.9 - Commonly confused words

Figurative language

  • Learn - Figure of Speech
  • 11.1 - Use personification
  • 11.2 - Interpret figures of speech
  • 11.3 - Figure of speech

Writing clear and concise sentences

  • Learn - How to Write Clearly and Concisely
  • 12.1 - Transitions with conjunctive adverbs
  • 12.2 - Use parallel structure
  • 12.3 - Are the modifiers used correctly?
  • 12.4 - Use the correct pair of correlative conjunctions
  • 12.5 - Topics from broadest to narrowest
  • 12.6 - Correct errors with frequently confused words

Author's purpose and tone

  • Learn - Author's Purpose and Tone
  • 13.1 - Which sentence is more formal?
  • 13.2 - Author's purpose
  • 13.3 - Author's tone

Literary devices

  • Learn - Figure of Speech
  • 14.1 - Use personification
  • 14.2 - Identify the source of allusions
  • 14.3 - Interpret figures of speech
  • 14.4 - Classify figures of speech
  • 14.5 - Interpret the meaning of allusions

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