Words that end with “-sion” and “-tion”

Words that end with -sion and -tion can be difficult to spell because these endings sound similar.

The good news is that you don't have to rely on sound alone to determine which ending to use! You can also look at the spelling of the word's related verb form. For example, most verbs that end in -duce will take the -tion ending after the c (like introduce, which becomes introduction).

With that hint in mind, see if you can fill in the blanks in the sentences below with the correct spelling.

1. I’m really enjoying learning about the traditions of Canada’s Inuit .

populasion

population

2. I’ve almost finished the report. I just have to write the .

conclusion

conclution

3. When Paula cleans her room, she always feels a to reorganize her closet.

compulsion

compultion

4. Today in science class, Ms. Greer taught her students about the role that plays in composting.

decomposision

decomposition

5. Jaya waited in line to get tickets while Sinead went to the to get popcorn and drinks.

concession

concetion

6. Jenna and her friends are really excited to go to the video game this weekend.

convension

convention

7. Fred made the that it was his turn to choose a book for book club, since he hadn’t had a turn to pick in a while.

assumpsion

assumption

8. The slips for the class trip to the science centre must be signed by Friday.

permission

permition

9. It’s a common that if you go outside with wet hair, you’ll catch a cold.

misconcepsion

misconception

10. As a kid, Sadie had an to cheese. Now she loves it; she puts cheese on everything!

aversion

avertion