1. My grandma started to write history books at age 76.

Question

2. My grandma started to write history books at the age of 76.

3. My grandma started to write history books at aged 76.

4. My grandma started to write history books when she was 76 years old.

5. My grandma started to write history books when 79 years old.

6. My grandma started to write history books at 76.

(Are all the expressions grammatical?)

My grandma started to write history books at age 76.

Answer 1

#s 3 and 5 are incorrect. The others are fine.

Answer 2

A little extra "why" on #3 = age is a noun but aged is an adjective.

#5 is missing the verb required in the last phrase. (when she WAS...)

Sra