Simple child's crossword!

[woolfy42]

My young son has this question in a simple maths crossword and I feel ridiculous because I can't find a word.

An increase in numbers (9)

- - - E - - - N -

Any ideas?

[factor-fiction]

ascending?

[woolfy42]

Thanks - I think that must be the answer, though it's not a very good clue!

[cupid04]

could be increment if your 'e' is in the wrong place?

[woolfy42]

I thought of increment.

Numbers of equal value (10) - I have EQUIVALENT

The R of increment, for this, would give

E - - - - A - R - -

?