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Date:___________________

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Grade 5 - English Language
1.13 Prefixes - Il, Im, In, and Ir

A prefix is a syllable at the beginning of a word that changes its meaning. The prefix il, im, in and ir all mean not.

Examples:
Illogical means not logical or practical.
Impossible means not possible.
Invisible means not visible.
Irrelevant means not relevant or practical.

prefixwordNew word New meaning
im + mature = immature not mature
im + prudent = imprudent not prudent
im + provable = improvable not provable
im + mortal = immortal not mortal
im + perfect = imperfect not perfect

prefixwordNew word New meaning
il + legible = illegible not legible
il + literate = illiterate not literate

prefixwordNew word New meaning
ir + relevant = irrelevant not relevant
ir + rational = irrational not rational

prefixwordNew word New meaning
in + adequate = inadequate not adequate
in + capable = incapable not capable
in + decent = indecent not decent
in + offensive = inoffensive not offensive


Directions: Choose the prefix that should be added to the root word given in each question to form a correct word. Also, write five example words and sentences using each of the prefixes 'il', 'im', 'in', and 'ir'.

Name: ___________________

Date:___________________

Grade 5 - English Language
1.13 Prefixes - Il, Im, In, and Ir

Q 1: _____ + patient
il
ir
im
in

Q 2: _____ + responsible
in
il
ir
im

Q 3: _____ + perfect
im
in
ir
il

Q 4: _____ + regular
il
ir
in
im

Q 5: _____ + complete
ir
il
in
im

Q 6: _____ + mature
ir
in
im
il

Q 7: _____ + sincere
ir
im
in
il

Q 8: _____ + legible
in
ir
il
im

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