4.2.6
Numbers
Test your knowledge with free interactive questions on Seneca — used by over 10 million students.
Bi - Two
Words beginning with 'bi' generally mean two of something.

Bilingual
- A person who is bilingual speaks two languages fluently.
- Example: Jenny's mother is Spanish and her father is Italian. She is bilingual because her parents taught her both Spanish and Italian.
- Alternative: Jenny's mother is Spanish and her father is Italian. She is fluent in two languages because her parents taught her both Spanish and Italian.

Bicycle
- A bicycle is a cycle with two wheels.
- Example: Johnny prefers riding his bicycle to taking the bus.
- Alternative: Johnny prefers riding his two-wheeled cycle to taking the bus.

Binary
- Binary means involving two things or having two parts.
- In maths and science, a binary system only has two numbers - one and zero.
- Example: Sapphire had to make a difficult binary decision - should she stay or should she go?
- Alternative: Sapphire had to decide between two options - should she stay or should she go?

Biform
- Biform means having two forms.
- Example: A Minotaur is a biform creature: half bull, half man.
- Alternative: A Minotaur is a two-form creature: half bull, half man.

Bipolar
- Bipolar disorder affects a person's mood. Sufferers alternate between two states: depression (feeling very down) and mania (feeling very happy).
- Example: It's thought that around 3% of Americans suffer from bipolar disorder.
Tri - Three
Words beginning with 'tri' generally mean three of something.

Triathlon
- A triathlon is a competition involving three different sporting events - normally swimming, cycling and running.

Tricycle
- A tricycle is a cycle with three wheels.

Tripod
- A tripod is a stand with three legs.
1Spelling
1.1Spelling
1.2Prefixes
1.3Suffixes
1.3.1Vowel Suffixes1.3.2Short Vowel Suffixes1.3.3Suffixes: '-ous'1.3.4Rules for Suffixes: '-ous'1.3.5Rules for Suffixes: '-ous' 21.3.6Suffixes: '-ly'1.3.7Suffixes: '-ation'1.3.8Suffixes: '-ation' 21.3.9Spelling: '-tion' Endings1.3.10Spelling: '-sion' Endings1.3.11Spelling: '-ssion' Endings1.3.12Spelling: '-cian' Endings1.3.13End of Topic Test - Suffixes1.3.14End of Topic Test - Spelling
1.4Making Words Plural
1.5Homophones
1.5.1Accept & Except1.5.2Affect & Effect1.5.3Ball & Bawl1.5.4Berry & Bury1.5.5Brake & Break1.5.6Fair & Fare1.5.7Grate & Great1.5.8Groan & Grown1.5.9Hear & Here1.5.10Heal, Heel & He'll1.5.11Knot & Not1.5.12Mail & Male1.5.13Main & Mane1.5.14Meat & Meet1.5.15Medal & Meddle1.5.16Missed & Mist1.5.17Peace & Piece1.5.18Plain & Plane1.5.19Rain & Reign & Rein1.5.20Scene & Seen1.5.21Weather & Whether1.5.22Whose & Who's1.5.23End of Topic Test - Homophones1.5.24End of Topic Test - Homophones 21.5.25End of Topic Test - Homophones 3
1.6Word Meanings
2Punctuation
2.1Punctuation
2.1.1Full Stops2.1.2Capital Letters2.1.3Commas2.1.4Commas 22.1.5Using Apostrophes with Regular Plurals2.1.6Using Apostrophes with Irregular Plurals2.1.7Question Marks & Exclamation Marks2.1.8Brackets2.1.9Dashes2.1.10Colon2.1.11Semi-Colon2.1.12Direct Speech2.1.13Indirect Speech2.1.14Hyphens2.1.15Ellipses2.1.16End of Topic Test - Punctuation2.1.17End of Topic Test - Punctuation 2
3Grammar
3.1Word Classes
3.2Conjunctions
3.3Writing Coherently
3.5Modal Verbs
3.6Phrasal Verbs
3.7Subjunctive Verbs
3.8Sentences
3.8.1Subject of a Sentence3.8.2Object of a Sentence3.8.3Main & Subordinate Clauses3.8.4Simple Sentences & Compound Sentences3.8.5Complex Sentences3.8.6Relative Clauses3.8.7Relative Clauses Without Relative Pronouns3.8.8Participle Clauses3.8.9Run-on Sentences3.8.10Sentence Functions3.8.11End of Topic Test - Sentences
3.9Tenses
3.10Adverbials
4Decoding Words
4.1Common Word Roots
4.2Common Prefixes
4.2.1For & Against4.2.2All & Same4.2.3Away & Far4.2.4Colour & Shape4.2.5Back & Down4.2.6Numbers4.2.7Across & Through4.2.8Life & Earth4.2.9Empty & Broken4.2.10Great & Greater4.2.11Hearing & Speaking4.2.12Apart & Together4.2.13Over & Under4.2.14In4.2.15Less & Smaller4.2.16Before & After4.2.17End of Topic Test - Common Prefixes 24.2.18End of Topic Test - Common Prefixes
5Reading & Writing
5.1Reading Formats
5.2Writing Formats
Jump to other topics
1Spelling
1.1Spelling
1.2Prefixes
1.3Suffixes
1.3.1Vowel Suffixes1.3.2Short Vowel Suffixes1.3.3Suffixes: '-ous'1.3.4Rules for Suffixes: '-ous'1.3.5Rules for Suffixes: '-ous' 21.3.6Suffixes: '-ly'1.3.7Suffixes: '-ation'1.3.8Suffixes: '-ation' 21.3.9Spelling: '-tion' Endings1.3.10Spelling: '-sion' Endings1.3.11Spelling: '-ssion' Endings1.3.12Spelling: '-cian' Endings1.3.13End of Topic Test - Suffixes1.3.14End of Topic Test - Spelling
1.4Making Words Plural
1.5Homophones
1.5.1Accept & Except1.5.2Affect & Effect1.5.3Ball & Bawl1.5.4Berry & Bury1.5.5Brake & Break1.5.6Fair & Fare1.5.7Grate & Great1.5.8Groan & Grown1.5.9Hear & Here1.5.10Heal, Heel & He'll1.5.11Knot & Not1.5.12Mail & Male1.5.13Main & Mane1.5.14Meat & Meet1.5.15Medal & Meddle1.5.16Missed & Mist1.5.17Peace & Piece1.5.18Plain & Plane1.5.19Rain & Reign & Rein1.5.20Scene & Seen1.5.21Weather & Whether1.5.22Whose & Who's1.5.23End of Topic Test - Homophones1.5.24End of Topic Test - Homophones 21.5.25End of Topic Test - Homophones 3
1.6Word Meanings
2Punctuation
2.1Punctuation
2.1.1Full Stops2.1.2Capital Letters2.1.3Commas2.1.4Commas 22.1.5Using Apostrophes with Regular Plurals2.1.6Using Apostrophes with Irregular Plurals2.1.7Question Marks & Exclamation Marks2.1.8Brackets2.1.9Dashes2.1.10Colon2.1.11Semi-Colon2.1.12Direct Speech2.1.13Indirect Speech2.1.14Hyphens2.1.15Ellipses2.1.16End of Topic Test - Punctuation2.1.17End of Topic Test - Punctuation 2
3Grammar
3.1Word Classes
3.2Conjunctions
3.3Writing Coherently
3.5Modal Verbs
3.6Phrasal Verbs
3.7Subjunctive Verbs
3.8Sentences
3.8.1Subject of a Sentence3.8.2Object of a Sentence3.8.3Main & Subordinate Clauses3.8.4Simple Sentences & Compound Sentences3.8.5Complex Sentences3.8.6Relative Clauses3.8.7Relative Clauses Without Relative Pronouns3.8.8Participle Clauses3.8.9Run-on Sentences3.8.10Sentence Functions3.8.11End of Topic Test - Sentences
3.9Tenses
3.10Adverbials
4Decoding Words
4.1Common Word Roots
4.2Common Prefixes
4.2.1For & Against4.2.2All & Same4.2.3Away & Far4.2.4Colour & Shape4.2.5Back & Down4.2.6Numbers4.2.7Across & Through4.2.8Life & Earth4.2.9Empty & Broken4.2.10Great & Greater4.2.11Hearing & Speaking4.2.12Apart & Together4.2.13Over & Under4.2.14In4.2.15Less & Smaller4.2.16Before & After4.2.17End of Topic Test - Common Prefixes 24.2.18End of Topic Test - Common Prefixes
5Reading & Writing
5.1Reading Formats
5.2Writing Formats
Practice questions on Numbers
Can you answer these? Test yourself with free interactive practice on Seneca — used by over 10 million students.
- 1The prefix 'bi' means how many things?Multiple choice
- 2What number does the prefix 'tri' relate to?Multiple choice
- 3Why is a triangle called a triangle?Multiple choice
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