What syllables in estimate have a short vowel sound?

Here's the breakdown of the syllables in "estimate" and their vowel sounds:

* es-ti-mate

* es - The "e" in this syllable has a short e sound, like in "bed" or "pen."

* ti - The "i" in this syllable has a short i sound, like in "bit" or "pin."

* mate - The "a" in this syllable has a long a sound, like in "cake" or "name."

So, the syllables with short vowel sounds in "estimate" are es and ti.