Math Worksheets Grade 1 | Grade1to6.com - Free Printable

Let’s go step by step.

We are asked to add either “a” or “an” before each word.

The rule is simple:
- Use “a” before words that start with a consonant sound.
- Use “an” before words that start with a vowel sound (a, e, i, o, u).

Note: It’s about the *sound*, not just the letter. But for this level, we’ll focus on the first letter being a vowel or consonant.

Let’s go through each word:

1. rat → starts with “r” (consonant) → a rat
2. apple → starts with “a” (vowel) → an apple
3. doctor → starts with “d” (consonant) → a doctor
4. jug → starts with “j” (consonant) → a jug
5. aeroplane → starts with “a” (vowel) → an aeroplane
6. axe → starts with “a” (vowel) → an axe
7. mat → starts with “m” (consonant) → a mat
8. bat → starts with “b” (consonant) → a bat
9. engine → starts with “e” (vowel) → an engine
10. paper → starts with “p” (consonant) → a paper
11. fan → starts with “f” (consonant) → a fan
12. umbrella → starts with “u” (vowel) → an umbrella
13. computer → starts with “c” (consonant) → a computer
14. car → starts with “c” (consonant) → a car
15. banana → starts with “b” (consonant) → a banana
16. bun → starts with “b” (consonant) → a bun

Double-checking all — yes, every vowel-starting word got “an”, and consonant-starting got “a”.

Final Answer:
a rat
an apple
a doctor
a jug
an aeroplane
an axe
a mat
a bat
an engine
a paper
a fan
an umbrella
a computer
a car
a banana
a bun