studyif offers hundreds of year 9 maths skills to explore and learn! Not sure where to start? Go to your personalised Recommendations wall and choose a skill that looks interesting!

Number theory
1.1 Factors Quiz
1.2 Divisibility rules Quiz
1.3 Prime or composite Quiz
1.4 Prime factorisation Quiz
1.5 Highest common factor Quiz
1.6 What is the lowest common multiple of 6 and 9? Quiz
1.7 Classify numbers Quiz

2.1 Absolute value and opposite integers Quiz
2.2 Integer inequalities with absolute values Quiz

Operations with integers
3.1 Integer addition and subtraction rules Quiz
3.2 Add and subtract integers Quiz
3.3 Add and subtract three or more integers Quiz
3.4 Integer multiplication and division rules Quiz
3.5 Multiply and divide integers Quiz
3.6 Evaluate numerical expressions involving integers Quiz

Rational numbers
4.1 Identify rational and irrational numbers Quiz
4.2 Lowest common denominator Quiz
4.3 Absolute value of rational numbers Quiz
4.4 Convert between decimals and fractions or mixed numbers Quiz
4.5 Compare rational numbers Quiz

Operations with rational numbers
5.1 Reciprocals and multiplicative inverses Quiz
5.2 Add and subtract rational numbers Quiz
5.3 Add and subtract rational numbers: word problems Quiz
5.4 Multiply and divide rational numbers Quiz
5.5 Evaluate numerical expressions involving rational numbers Quiz

Exponents and roots
6.1 Understanding exponents Quiz
6.2 Evaluate exponents Quiz
6..3 Solve equations with variable exponents Quiz
6.4 Exponents with negative bases Quiz
6.5 Exponents with decimal and fractional bases Quiz
6.6 Evaluate negative exponents Quiz
6.7 Square roots of perfect squares Quiz
6.8 Positive and negative square roots Quiz
6.9 Relationship between squares and square roots Quiz
6.10 Cube roots of perfect cubes Quiz

Standard form
7.1 Convert between ordinary numbers and standard form Quiz
7.2 Compare numbers written in standard form Quiz

Ratios, rates and proportions
8.1 Identify equivalent ratios Quiz
8.2 Write an equivalent ratio Quiz
8.3 Unit rates Quiz
8.4 Do the ratios form a proportion? Quiz
8.5 Solve proportions Quiz
8.6 Solve proportions: word problems Quiz

9.1 Convert between percents, fractions and decimals Quiz
9.2 Compare percents to fractions and decimals Quiz
9.3 Percents of numbers and money amounts Quiz
9.4 Compare percents of numbers Quiz
9.5 Solve percent equations Quiz

Consumer maths
10.1 Price lists Quiz
10.2 Unit prices Quiz
10.3 Unit prices: find the total price Quiz
10.4 Find the percent: discount and mark-up Quiz
10.5 Percent of a number: VAT, discount and more Quiz

Units of measurement
11.1 Convert rates and measurements: metric units Quiz
11.2 Metric mixed units Quiz
11.3 Convert between square metres and hectares Quiz
11.4 Convert between cubic metres and litres Quiz
11.5 Precision Quiz
11.6 Imperial mixed units Quiz
11.7 Convert between metric and imperial units Quiz

Problem solving
12.1 Multi-step word problems Quiz
12.2 Guess-and-check word problems Quiz
12.3 Elapsed time word problems Quiz

Two-dimensional figures
13.1 Identify and classify polygons Quiz
13.2 Classify triangles Quiz
13.3 Identify trapeziums Quiz
13.4 Classify quadrilaterals Quiz
13.5 Find missing angles in triangles and quadrilaterals Quiz
13.6 Interior angles of polygons Quiz
13.7 Find measures of complementary, supplementary, vertical and adjacent angles Quiz

Pythagoras’ theorem
14.1 Pythagoras’ theorem: find the length of the hypotenuse Quiz
14.2 Pythagoras’ theorem: find the missing leg length Quiz
14.3 Pythagoras’ theorem: find the perimeter Quiz

Expressions and properties
15.1 Write variable expressions Quiz
15.2 Evaluate one-variable expressions Quiz

16.1 Calculate mean, median, mode and range Quiz
16.2 Interpret charts to find mean, median, mode and range Quiz
16.3 Mean, median, mode and range: find the missing number Quiz
16.4 Changes in mean, median, mode and range Quiz
16.5 Quartiles Quiz
16.6 Identify representative, random and biased samples Quiz

One-variable inequalities
17.1 Solutions to inequalities Quiz
17.2 Write inequalities from number lines Quiz
17.3 Solve one-step inequalities Quiz
17.4 Solve two-step linear inequalities Quiz
17.5 Solve multi-step inequalities Quiz

One-variable equations
18.1 Which x satisfies an equation? Quiz
18.2 Write an equation from words Quiz
18.3 Write and solve equations that represent diagrams Quiz
18.4 Solve one-step equations Quiz
18.5 Solve two-step equations Quiz
18.6 Solve multi-step equations Quiz
18.7 Solve multi-step equations Quiz
18.8 Solve equations involving like terms Quiz
18.9 Solve equations with variables on both sides Quiz
18.10 Solve equations: mixed review Quiz

studyif offers more than 100 year 9 English skills to explore and learn! Not sure where to start? Hover your mouse over any skill name to preview it, then click to practise!

Sentence structure
1.1 Is the sentence declarative, interrogative, imperative or exclamatory? Quiz
1.2 Is it a direct object or an indirect object? Quiz
1.3 Is it a complete sentence or a fragment? Quiz
1.4 Is it a complete sentence or a run-on? Quiz
1.5 Is it a complete sentence, a fragment or a run-on? Quiz
1.6 Is it a phrase or a clause? Quiz
1.7 Is the sentence simple, compound, complex or compound-complex? Quiz

2.1 Identify plurals, singular possessives and plural possessives Quiz
2.2 Form plurals of nouns ending in f, fe, o and y Quiz
2.3 Form plurals: review Quiz
2.4 Identify and correct errors with plural and possessive nouns Quiz

3.1 Choose between subject and object pronouns Quiz
3.2 Compound subjects and objects with ‘I’ and ‘me’ Quiz
3.3 Compound subjects and objects with pronouns Quiz
3.4 Choose between personal and reflexive pronouns Quiz
3.5 Is the pronoun reflexive or intensive? Quiz
3.6 Identify vague pronoun references Quiz
3.7 Use reflexive pronouns Quiz
3.8 Use relative pronouns: who and whom Quiz
3.9 Use the pronoun that agrees with the antecedent Quiz
3.10 Use relative pronouns: who, whom, whose, which and that Quiz

Verbs and verbals
4.1 Use the correct verb – with compound subjects Quiz
4.2 Identify active and passive voice Quiz
4.3 Identify linking verbs, predicate adjectives and predicate nouns Quiz
4.4 Rewrite the sentence in active voice Quiz
4.5 Correct errors with subject-verb agreement Quiz
4.6 Correct errors with indefinite pronoun-verb agreement Quiz

Adjectives and adverbs
5.1 Order adjectives Quiz
5.2 Choose between adjectives and adverbs Quiz
5.3 Is the word an adjective or adverb? Quiz
5.4 Transitions with conjunctive adverbs Quiz
5.5 Identify adjectives Quiz
5.6 Identify adverbs Quiz

Punctuation, capitalisation and formatting
6.1 Formatting titles Quiz
6.2 Formatting and capitalising titles: review Quiz
6.3 Use semicolons and commas to separate clauses Quiz
6.4 Use semicolons, colons and commas with lists Quiz
6.5 Decide whether ellipses are used appropriately Quiz
6.6 Capitalising titles Quiz

Prefixes and suffixes
7.1 Words with pre- Quiz
7.2 Words with re- Quiz
7.3 Words with sub- Quiz
7.4 Words with mis- Quiz
7.5 Words with un-, dis-, in-, im- and non- Quiz
7.6 Words with -ful Quiz
7.7 Words with -less Quiz
7.8 Words with -able and -ible Quiz

Greek and Latin roots
8.1 Use Greek and Latin roots as clues to the meanings of words Quiz
8.2 Use words as clues to the meanings of Greek and Latin roots Quiz
8.3 Determine the meanings of Greek and Latin roots Quiz
8.4 Determine the meanings of words with Greek and Latin roots Quiz

Reference skills
9.1 Alphabetical order Quiz
9.2 Use guide words Quiz
9.3 Use thesaurus entries Quiz

Word relationships and usage
10.1 Choose the synonym Quiz
10.2 Choose the antonym Quiz
10.3 Describe the difference between related words Quiz
10.4 Positive and negative connotation Quiz
10.5 Use the correct homophone Quiz
10.6 Use the correct frequently confused word Quiz
10.8 Analogies Quiz
10.9 Analogies: challenge Quiz

Figurative language
11.1 Use personification Quiz
11.2 Interpret figures of speech Quiz

Writing clear and concise sentences
12.1 Transitions with conjunctive adverbs Quiz
12.2 Use parallel structure Quiz
12.3 Are the modifiers used correctly? Quiz
12.4 Use the correct pair of correlative conjunctions Quiz

Author’s purpose and tone
13.1 Which sentence is more formal? Quiz

Literary devices
14.1 Use personification Quiz
14.2 Identify the source of allusions Quiz
14.3 Interpret figures of speech Quiz
14.4 Classify figures of speech Quiz
14.5 Interpret the meaning of allusions Quiz