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St Paul's C of E Primary School

Heathside Grove

LEARNING to make a difference

Monday 12th October

L.O: To add a suffix to a root word. 

 

What is a suffix? A suffix is a group of letters that you add on to the end of a root word to make a new word. Sometimes this can also change the meaning of the original word. 

 

Today we are going to look at the suffixes -ment, -ness and -ful. 

If the suffix starts with a consonant letter, it is usually added straight on without changing the root word. For example, "ment" starts with a consonant and so it can be added to the root word "enjoy" without changing it. Enjoy becomes enjoyment. 

 

Try adding -ment, -ness or -ful to the following root words yourself. 

sad

care

play

plain

 

Answers -

sadness

careful

playful

plainness

 

However, sometimes you have to change the root word before you add the suffix. For example, before you add -ment to the end of argue, you have to remove the e.

Argue becomes argument. 

 

For some words, you have to change a letter before adding the suffix. For example, happy. To add -ness on to the end of happy, you have to change the y to an i. 

Happy becomes happiness. 

 

Now get someone to test you on these new words you have learnt today!

sadness

careful

playful

plainness

argument

happiness

 

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