The Doubling Rule
Drop Suffix
Change Suffix
Nothing
100
Marlin's dad did not think he was a strong ________ because he had one small fin.

swimmer

100

The buildings started _________ during the earthquake.

shaking

100

She ordered a hamburger and ________ for dinner.

fries

100

She _____________ upon the first star in the sky.

wished

200

The thief _______________ the store, but got caught as she tried to run away.

robbed

200

They saw his new braces when he _________ for the photo.

smiled

200
The teacher ____________ the directions so each student had their own.

copied

200

The chef was ________________ dinner for the guests.

cooking

300

He will ______________ the ball of dough to make a tortilla. 

flatten

300
We waited for the bananas to __________ before eating them.

ripen

300

The chef added fresh _____________ to the muffins. 

berries

300

Their parents warned them to be _____________ near the hot stove.

careful

400

A common _______________ to a fairy tale is "Once upon a time..."

beginning

400

Many students are ____________ in May and will wear a cap and gown.

graduating

400

He ______________ for the big test so that he would do well.

studied

400

He turned up the _______________ on his computer screen so he could see better.

brightness

500

The student __________ to sneaking into the cubby room during snack.

admitted

500

The two armies were ______________ against each other in the war.

battling

500

They decided to go to the pool on the __________ day of the week.

sunniest

500

Some people shower daily, others might shower _________, but hopefully everyone showers more than monthly.

weekly