Unit 8.1

Fractions and decimals

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Introduction

Fractions and decimals represent a numerical quantity.

Form

  • Regular fractions

Spelling: a cardinal number + an ordinal number in the plural (except for the number 1)

2/3 two thirds
  • Irregular fractions

Spelling: They have their own specific names

1/4 a quarter
1/2 a half
3/4 three quarters
  • Two ways to express their writing form:
    • Fraction
3/5 three fifths
    • Decimals
0.5 point five/ nought point five/ zero point five
0.25 point two five/ nought point two five/zero point two five
0.333 point three three three/ nought point three three three/ zero point three three three

Example

  • The fat content of this product is two thirds.
  • They held the post for two and a half years.
  • We’re only talking¬†a quarter¬†million.

Use

We use fractions and decimals in science and everyday life to express quantities.

Exercises

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