1. Exercise Express Grade 4 Week 2 When a base word ends with a consonant, double that letter before adding a suffix that starts with a vowel.

2. plan (+ing) plan

3. run (+er) ruhn

4. thin (+est) thin

5. slim (+er) slim

6. tan (+est) tan

7. flat (+er) flat

8. wet (+est) wet

9. mad (+er) mad

10. hot (+est) hot

11. skip (+ing) skip

12. plan plan We are planning. Good writers reread and revise by adding, deleted, moving, or substituting. Stretch It!

13. the runer whos one the Race wuz The tanest and slimest Good writers reread and edit. Fix It!

14. Good readers make words with sounds. Add It!