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# 4.23: Review of Simple Addition and the Three Changes

Created by: CK-12

## Review of Simple Addition and the Three Changes

1. Divide these words into shorter words and suffixes. Be sure you show any cases of twinning, final <e> deletion, or <y>'s that are changed to $<\mathrm{i}>$:

Word = Shorter Word + Suffix
libraries = libra$\cancel{y}$ + i + es
recycles = recycle + s
societies = societ$\cancel{y}$ + i + est
helicopters = helicopter + s
rerunning = return + n + ing
named = nam$\cancel{e}$ + ed
shutter = shut + t + er
families = famil$\cancel{y}$ + es
rewriting = rewrit$\cancel{e}$ + ing
ruler = rul$\cancel{e}$ + er
stories = stor$\cancel{y}$ + es

2. Add these prefixes, words and suffixes together. Show any twinning or final <e> deletion, or <y>'s that are changed to $<\mathrm{i}>$:

Prefixes, Words, and Suffixes = Longer Word
famil$\cancel{y}$ + i + es = families
centur$\cancel{\mathrm{y}}$ + i + es = centuries
un + plan + n + ed = unplanned
short + est = shortest
re + liv$\cancel{e}$ + ed = relived
brother + s = brothers
book + keep + er = bookkeeper
un + tim$\cancel{e}$ + ed = unlined
teach + er + s = teachers
suppl$\cancel{\mathrm{y}}$ + i + es = supplies
success + es = successes
zoo + s = zoos
think + er + s = thinkers
un + done = undone
full + est = fullest
societ$\cancel{y}$ + i + es = socities
book + s = books
quick + est = quickest
ghost + s = ghosts
un + mix + ed = unmixed
cloth$\cancel{e}$ + ing = clothing
picnic + s = picnics
suppl$\cancel{\mathrm{y}}$ + l + er + s = suppliers
six + th + s = sixths
ice + $\cancel{y}$ + i + est = tiniest
re + view + er + s = reviewers

## Subjects:

1 , 2 , 3 , 4 , 5

Feb 23, 2012

Jan 26, 2015