Ch 1 · Lesson 36

Number house three: the tens and centum

to , then , and not one of them ever changes its ending. Watch : ninety borrows its start from nonus, ninth, not from .

Practise this lesson

9-word session

A quick mix of exercises - recognise, recall, type and build each word. Miss one and it comes back round until it sticks.

What do the colours mean?