Numbers From 11 to 99

Level 2

Tens come first, then units: dudek tri.

How It Works

Number	Say	Number	Say
11	dek unu	30	tridek
12	dek du	45	kvardek kvin
19	dek naŭ	67	sesdek sep
20	dudek	88	okdek ok
23	dudek tri	99	naŭdek naŭ

The words for the tens are dudek, tridek, kvardek, kvindek, sesdek, sepdek, okdek and naŭdek. Each is a unit plus dek in one word. The unit that follows stays separate: kvardek kvin.

As with smaller numbers, these take no -j or -n when they count things. The noun carries them: Li havas dek unu infanojn.

Numbers can also stand alone: Tridek kaj kvardek kvin faras sepdek kvin.

Examples (5)

Nia klubo havas dek du membrojn.
Our club has twelve members.
Dek du is two words, and membrojn carries the -jn.
Homoj el dudek tri landoj venas al la kongreso.
People from twenty-three countries are coming to the congress.
Dudek tri is a ten and a unit.
Mia avino havas okdek jarojn.
My grandmother is eighty.
Okdek is one word.
Sesdek minutoj faras unu horon.
Sixty minutes make one hour.
Sesdek is the ten for six.
Tridek kaj kvardek kvin faras sepdek kvin.
Thirty and forty-five make seventy-five.
Numbers can stand alone, without a noun.

Common Mistakes

Putting the unit before the ten.
Estas tri kaj dudek homoj ĉi tie.
Estas dudek tri homoj ĉi tie.
Say the ten first and then the unit, with no kaj between them: dudek tri.

How It Connects

Tap a pattern to see what it builds on and what it leads to.

Numbers From 11 to 99Level 2

Learn This First

Larger numbers are made by joining the first ten.

Numbers From 0 to 10
Know the numbers from 0 to 10, because larger numbers join them: dek du, dudek.
Level 1

Learn Next

Patterns that build on this one.

kiom kostas?How Much Does It Cost?Level 2

Practice Numbers From 11 to 99 in Bubblegum

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