4.2.8

Numbers

Test yourself

Bi - Two

Words beginning with 'bi' generally mean two of something.

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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.
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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.
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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?
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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.
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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.

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Triathlon

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

  • A tricycle is a cycle with three wheels.
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Tripod

  • A tripod is a stand with three legs.

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1Spelling

2Punctuation

3Grammar

4Decoding Words

5Reading & Writing

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