Prefixes
Suffixes
Synonyms and Antonyms
What’s the Main Idea?
I infer…
100

Add this prefix when you need to do something again

re-

100

This suffix means more than 1

-s, or -es

100

Synonym for 'kind'

Antonym for 'hard'

nice, friendly, thoughtful

easy, simple

100

Dragonflies’ bodies are built to hunt.  They can fly in any direction.  They can fly higher and faster than most insects. They have larger eyes than any other insect. These tools help them make them a top predator.

Dragonfly bodies are built to hunt.

100

Splat! “Oh rats!” Thought Katie as she stooped to clean up the mess. I hope we have another one.  She looked in the fridge and pulled out the carton.  One left!  Breakfast wasn’t ruined after all. Katie dropped...

an egg.

200

Give two examples of prefixes that mean not

dis-, un-, in-, im-, il-, ir-, non-

200

this suffix means able to

-able, -ible

200

Synonym for 'pretty'

Antonym for 'smooth'

beautiful, good- looking, attractive

rough, bumpy

200

Wetlands are habitats that fill with water for at least part of the year.  They were formed long ago by glaciers.  Most appear near large bodies of water.  Some have fresh water.  Some have salt water.

Wetlands are habitats that fill with water for at least part of the year.

200

Derek ran up the court, “I’m open!” he yelled toward the boy with the ball.  The boy passed the ball to Derek and he made his shot!  The crowd cheered as two more points were added to the scoreboard. Derek is playing...

basketball.

300

What prefix means under or below?

sub

300

This suffix means most

-est

300

Synonym for 'great'

Antonym for 'exit'

excellent, wonderful, fantastic, fabulous

enter

300

A seahorse is an unusual fish.  Seahorses don’t look like most fish.  Instead of scales they have plates to that protect their body.  They can change color.  It uses its snout to suck up its food.  Father seahorses protect their eggs in a pouch.  What is one detail that supports the main idea that seahorses are unusual fish?

  • Seahorses don’t look like most fish. 
  • Instead of scales they have plates to that protect their body. 
  • They can change color. 
  • It uses its snout to suck up its food. 

Father seahorses protect their eggs in a pouch. 

300

Sasha handed the book to the librarian.  The librarian opened the book and found crayon scribbles on almost every page.  “I’m really sorry,” said Sasha.  “I should have kept the book in my room.”  Sasha's library book was scribbled on by...

a baby or smaller sibling.

400

This prefix means before

pre

400

This suffix means more or one who

er

400

Synonym for 'cold'

Antonym for 'fiction'

chilly, freezing,

non-fiction, true

400

Mars is the planet most like Earth in our Solar System.  Mars once had lots of water.  Mars has deltas formed by running water just like Earth.  The same type of sediment buildup can be found on Mars and Earth.    

What is this passage mostly about?

Mars and Earth are alike

400

Mom lit three candles.  “There that’s better.” She said.  Claire turned off her flashlight.  The house was quiet except for the sound of the wind blowing through the trees outside.  Mom lit candles because of the...

blackout.

500

This prefix changes something good into something bad

mis-

500

This suffix changes words from the present to the past

-ed

500

Synonym for 'fast'.

Antonym for 'friend'.

Quick, speedy,

enemy

500

Some animals are called vampires because they need blood to live or are the color of blood.  Female mosquitos need blood to make and grow eggs.  Vampire bats drink blood from animals to survive.  The vampire squid doesn’t eat blood but it is the color of blood.  A good title for this passage might be?

a.  Vampires Exist

b. Blood is Food

c.  All about Bats

d.  Vampires Live in the Ocean 

a.  Vampires Exist

500

Alex ran all the way home from school.  “Mom!” he shouted as soon as he opened the door, “Look!” He handed his mother some papers.  “you were right, all that studying really did pay off! He said excitedly. Alex was excited because...

he got a good grade.

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