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This is a set of prefixes and their meanings for 3rd Grade.

mis-

wrongly

pre-

before

pro-

favor or forward

re-

again or back

mistake

to take something the wrong way

misbehave

to behave wrongly

misunderstand

to understand something the wrong way

pretest

to take a test before

preteen

before you become a teenager, you are called this

preschool

before you start school

prehistoric

before the start of history

pro-American

to be for America

pro-education

to be for education

proactive

to be for action

redo

to do again

rewrite

to write again

repaint

to paint again

reheat

to heat again

reuse

to use again

unhappy

not happy

unwanted

not wanted

untie

to not tie

unglued

to not glue

proceed

to move forward

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