thirty
part of speech
number (thirty)
meaning for a pupil
1) Thirty is the number 30. It is three tens. tree →
2) Half an hour is 30 minutes. tree →
3) Many months have 30 days. tree →
sense in the lessons
Maths: a number of things; minutes in half an hour; days in many months; counting in tens. Everyday: «half past» on a clock means thirty minutes past the hour; ages, prices, speed limits.
examples
- There are thirty children in the class. tree →
- He waited thirty minutes. tree →
- Thirty is three times ten. tree →
- She saved thirty dollars. tree →
- Half an hour is thirty minutes. tree →
- April, June, September and November have thirty days. tree →
- The speed limit here is thirty miles an hour. tree →
- I've been living in the forest for thirty years. tree →
note
A number written in words; read it as 30. Half an hour is thirty minutes. Trap: do not confuse thirty (30) with thirteen (13).
Trees and pragmatics
Every meaning and example of «thirty» parsed by Mova, each sentence with its dependency tree and frames.