Assimilated Prefixes Practice

Word Sums

100

attract

at + tract

200

occur

oc + cur

300

supply

sup + ply

400

collection

col + lect + ion

500

opposite

op + pose + ite

(the <e> is replaced by the vowel suffix, but it's there in the base!)

Two Consecutive Identical Consonants

100

ill

As a content word it needs three letters (also, the 'floss' pattern.) 

200

kiss

Plural cancelation, 'floss' rule.

300

muddy

double the final consonant of <mud> when adding a vowel suffix

400

butt

Content spelling, different from <but>

500

affect

<af> is an assimilated prefix

<in-> ('not')

100

i___fant

<in>

infant

200

i___possible

<im>

impossible

300

i___legal

<il>

illegal

400

i___regular

<ir>

irregular

500

i__gnore

Nothing! It's just <i>.

<sub->

100

su___marine

<sub>

submarine

200

su___port

<sup>

support

300

su___stance

<sub>

substance

400

su___cess

<suc>

success

500

su__pend

<sus>

suspend

What's That Prefix Mean?

100

exit, extract

<ex-> means 'out, out of'

200

combine, compare

<com> means 'with, together'

300

inspire, inject, indent

<in-> means 'in'

400

erase, erupt, emit

<e-> means 'out, out of'

500

survive, surprise

<sur-> means 'super, over, above, beyond'