Understanding Prefixes: Auto, De, Semi

What is the prefix in the word "autopilot"?

• auto-

• pilot-

• -pilot

• -auto

What does the prefix "de-" mean in the word "deactivate"?

• Above

• Below

• Opposite

• Together

Identify the prefix in the word "semicircle".

• circle-

• semi-

• -circle

• -semi

What does the prefix "il-" mean in the word "illegal"?

• Not

• Very

• Over

• Under

What is the prefix in the word "impossible"?

• im-

• possible-

• -possible

• -im

What does the prefix "in-" mean in the word "invisible"?

• Inside

• Not

• Over

• Under

Identify the prefix in the word "irregular".

• regular-

• ir-

• -regular

• -ir

What does the prefix "auto-" mean in the word "autograph"?

• Self

• Other

• Together

• Apart

What is the prefix in the word "defrost"?

• de-

• frost-

• -frost

• -de

What does the prefix "semi-" mean in the word "semifinal"?

• Half

• Double

• Full

• None