Suffixes Worksheets – 147 Word Sums, 4 Spelling Rules

All 147 word sums

Just add it 44

agree + ment = ___
bench + es = ___
box + es = ___
boy + s = ___
care + ful = ___
cat + s = ___
cold + er = ___
dark + ness = ___
dress + es = ___
enjoy + able = ___
enjoy + ment = ___
fast + est = ___
fit + ness = ___
fox + es = ___
help + ful = ___
hope + ful = ___
hope + less = ___
joy + ful = ___
jump + ing = ___
key + s = ___
kind + ness = ___
move + ment = ___
open + ed = ___
pain + less = ___

Show all 147 word sums (123 more)

Just add it, continued

pay + ment = ___
play + ed = ___
play + er = ___
quick + ly = ___
read + able = ___
sad + ly = ___
sad + ness = ___
safe + ly = ___
sleep + less = ___
soft + ness = ___
stay + ing = ___
talk + ing = ___
tall + est = ___
teach + er = ___
thank + ful = ___
toy + s = ___
use + less = ___
walk + ed = ___
wash + able = ___
wish + es = ___

Drop the e 34

bake + ed = ___
bake + er = ___
believe + able = ___
bite + ing = ___
brave + est = ___
care + ing = ___
close + ed = ___
close + est = ___
come + ing = ___
dance + er = ___
excite + ed = ___
give + ing = ___
hike + er = ___
hope + ing = ___
joke + ed = ___
large + er = ___
live + ed = ___
make + ing = ___
move + ing = ___
nice + est = ___
race + er = ___
ride + ing = ___
rule + er = ___
save + ed = ___
share + ing = ___
shine + ing = ___
skate + ed = ___
smile + ed = ___
taste + ed = ___
trade + ing = ___
wave + ing = ___
wide + est = ___
wipe + ing = ___
write + ing = ___

Double the last letter 34

beg + ed = ___
begin + ing = ___
big + er = ___
chop + ed = ___
clap + ing = ___
dig + ing = ___
drop + ed = ___
drum + er = ___
flat + est = ___
forget + ing = ___
grab + ed = ___
hop + ing = ___
hot + est = ___
hug + ed = ___
jog + er = ___
mad + est = ___
nap + ing = ___
pet + ing = ___
plan + ed = ___
rub + ed = ___
run + ing = ___
sad + er = ___
shop + ing = ___
shut + ing = ___
sit + ing = ___
skip + ed = ___
spin + ing = ___
stop + ed = ___
swim + er = ___
tap + ing = ___
thin + er = ___
trip + ed = ___
wet + est = ___
win + er = ___

Change y to i 35

angry + ly = ___
baby + es = ___
beauty + ful = ___
busy + est = ___
carry + ed = ___
carry + ing = ___
city + es = ___
copy + ed = ___
cry + ed = ___
cry + ing = ___
early + er = ___
easy + ly = ___
empty + ness = ___
fly + es = ___
fry + ing = ___
funny + er = ___
happy + ly = ___
happy + ness = ___
heavy + er = ___
hurry + ed = ___
lazy + ness = ___
lucky + ly = ___
mercy + ful = ___
merry + ment = ___
penny + less = ___
pony + es = ___
pretty + est = ___
puppy + es = ___
ready + ly = ___
rely + able = ___
silly + est = ___
story + es = ___
study + ed = ___
study + ing = ___
try + es = ___

How this list was compiled: Written by hand for this page: 147 word sums, each a base word, a suffix and a blank, with the right spelling and two wrong ones. The spelling rules were checked on Wikipedia: a silent e is usually dropped before a suffix that starts with a vowel (en.wikipedia.org/wiki/Silent_e), the last consonant of a one-syllable word with one short vowel is doubled before a suffix (en.wikipedia.org/wiki/English_orthography), and a y after a consonant becomes i before -es (en.wikipedia.org/wiki/English_plurals), all read 2026-09-23. Words with two accepted spellings (loveable, useable, dryer) were left out. Licence: own work

How it works

Each sheet draws 8 of our 147 word sums: a base word, a suffix such as -ing, -ed, -er, -est, -ful or -ness, and three spellings of the new word. The wrong two are the mistakes children really make.

Read the full guide

Suffix worksheets by spelling rule

Set picks one rule. Just add it: jump + ing, care + ful. Drop the e before a suffix that starts with a vowel: hope + ing = hoping. Double the last letter of a short word with one short vowel: hop + ing = hopping. Change y to i after a consonant: happy + ness = happiness.

Suffix practice with your own words

Type one sum a line, an equals sign, the right spelling, then a slash before each wrong one: slow + er = ___ = slower / slowwer. Your lines replace ours.

Four sums in Change y to i keep the y: it stays before -ing, so cry + ing is crying.

Questions and answers

Where are the er est worksheets?

Comparing words are spread through all four sets: colder and tallest just add, nicest drops the e, bigger and hottest double, funnier and busiest change y to i. All of them mixes the rules on one sheet.

Why does hope + ing lose its e but hope + ful keep it?

A silent e usually drops before a suffix that starts with a vowel (-ing, -ed, -er, -able) and stays before one that starts with a consonant (-ful, -less, -ly, -ment): hoping, hopeful, movement.

What grade learns suffixes?

The Common Core foundational skills list decoding words with common suffixes in grade 2 (RF.2.3d) and adding suffixes to base words in grade 3 spelling (L.3.2e, with sitting, smiled, cries and happiness as its examples).