Look at these adjectives. In your books group them together into sets that are the same. Then can you write a rule for each set. Why are those words together? Think about the word is spelt before the –er or –est ending has been added.

Name                                                                                         Date

Adjectives    Adding er and est

When we add  er or  est to some words we double the last letter.

wet  - wetter  - wettest

1)   The planet was the ___________ one in space. (hot)

2)  It was the ____________ night there had ever been on Mars. (wet)

3)  He saw the _____________ alien coming from the spaceship. (thin)

4)  From the rocket he saw the ___________ planet. (red)

5)  The astronaut stepped onto the _____________ part of the moon. (flat)

6)  As he waved goodbye the alien felt the ___________ he had ever been. (sad)

When we add  er or est to words ending in y we change the y to an i.

happy   - happier   - happiest

1)   He was the _____________ astronaut in space. (happy)

2)  It was the ____________ rocket in the space station. (noisy)

3)  Zogg was _____________ than his friend Zurgg. (lazy)

4)  The planet Mess-Mess was the ____________ in the solar system. (untidy)

5)  Pling was the ______________ alien on his planet. (funny)

6)  Tom was the ___________ astronaut in the rocket. (hungry)

Can you find some of your own words that match these rules?

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