1. Doubling and Dropping Rules for adding vowel suffixes
Grade 4 lesson 6
Review Lesson &
Doubling and Dropping Rules for adding vowel suffixes

2. Vowel suffixes
A suffix is a letter or letters added AFTER the base word to create a new word.
We know a suffix is a VOWEL suffix if the first letter of the suffix is a vowel.
Examples:
- ing
- y
-ed
-er
est

3. Adding vowel suffixes
When you add a vowel suffix to a base word, you MUST know if the final syllable of the base word has a short or long vowel sound.
DOUBLING RULE: When you hear a base word with a short vowel sound, double the final consonant before adding the vowel suffix.
DROPPING RULE: When you hear a base word with a long vowel sound, drop the silent e before adding the vowel suffix.

4. DOUBLE OR DROP? nose + y = nosy bag + y = baggy fade + ed = faded
DOUBLING RULE WORDS
DROPPING RULE WORDS
Base Word w/ Short Vowel Sound
bag + y = baggy
spin + ing = spinning
clip + er = clipper
blot + ed = blotted
Base Word w/ Long Vowel Sound
nose + y = nosy
fade + ed = faded
shine + ing = shining
bake + er = baker

5. Spelling words bagging dividing baggy faded blotting fading
blotted hoped
clipper hoping
clipping nosy
dimming rosy
dropping shining
maddest taping
spinning using