Numbers and Counting in Swahili

Overview

The Swahili number system blends Bantu and Arabic origins, creating a unique counting system that A1 learners must master for everyday transactions, telling time, and describing quantities. At the CEFR A1 level, knowing numbers 1-20 and understanding which numbers agree with noun classes is essential.

A distinctive feature of Swahili numbers is that some (1-5 and 8) are Bantu-origin and must agree with the noun class of the thing being counted, while others (6, 7, 9, 10 and above) are Arabic-origin and remain invariable. This split system means that "two people" (watu wawili) and "two books" (vitabu viwili) use different prefix forms of "two," but "six people" (watu sita) and "six books" (vitabu sita) use the identical word.

How It Works

Basic Numbers

Number	Swahili	Origin	Agrees?
1	-moja	Bantu	Yes
2	-wili	Bantu	Yes
3	-tatu	Bantu	Yes
4	-nne	Bantu	Yes
5	-tano	Bantu	Yes
6	sita	Arabic	No
7	saba	Arabic	No
8	-nane	Bantu	Yes
9	tisa	Arabic	No
10	kumi	Arabic	No

Class Agreement for Numbers 1-5 and 8

Class	1	2	3	4	5	8
1/2 (wa-)	mmoja	wawili	watatu	wanne	watano	wanane
3/4 (mi-)	mmoja	miwili	mitatu	minne	mitano	minane
7/8 (vi-)	kimoja	viwili	vitatu	vinne	vitano	vinane
9/10 (n-)	moja	mbili	tatu	nne	tano	nane
5/6 (ma-)	moja	mawili	matatu	manne	matano	manane

Compound Numbers

Number	Swahili
11	kumi na moja
12	kumi na mbili
15	kumi na tano
20	ishirini
30	thelathini
50	hamsini
100	mia (moja)
1000	elfu (moja)

Examples in Context

Swahili	English	Note
watu watatu	three people	Class 2 agreement
vitabu vitano	five books	Class 8 agreement
nyumba mbili	two houses	Class 10 agreement
siku kumi na tano	fifteen days	Compound number
watoto wanne	four children	Class 2 agreement
miti sita	six trees	No agreement (Arabic)
magari saba	seven cars	No agreement
viti vinane	eight chairs	Class 8 agreement
wanafunzi ishirini	twenty students	No agreement
shilingi mia tano	five hundred shillings	Compound

Common Mistakes

Applying agreement to Arabic-origin numbers

• Wrong: watu wasita (six people with wa- prefix)
• Right: watu sita
• Why: Numbers 6, 7, 9, 10, and higher (Arabic origin) do not take class prefixes.

Forgetting agreement on Bantu-origin numbers

• Wrong: vitabu tatu (three books — missing vi- prefix)
• Right: vitabu vitatu
• Why: Numbers 1-5 and 8 must agree with the noun class.

Wrong class prefix on numbers

• Wrong: nyumba wawili (two houses — using class 2 prefix)
• Right: nyumba mbili
• Why: "Nyumba" is class 9/10, which uses mbili, not wawili (class 2).

Usage Notes

Swahili time-telling follows a different system from Western clocks: the Swahili day starts at dawn (6:00 AM), so "saa moja" (hour one) is 7:00 AM. This can be confusing for beginners and is usually addressed separately from basic number learning.

In markets and everyday transactions, numbers are essential. Prices are typically stated in shillings: "shilingi elfu mbili" (two thousand shillings).

Practice Tips

1. Daily counting: Count objects around you in Swahili, using the correct class agreement: "viti viwili, meza moja, vitabu vitatu."
2. Market role-play: Practice asking prices and counting money in Swahili to build fluency with numbers in practical contexts.
3. Agreement sorting: Sort numbers into two groups — those that agree with noun classes and those that do not — and drill the agreeing ones with different noun classes.

Related Concepts

• Prerequisite: Noun Class 1/2: M-/Wa- (People) — class agreement on numbers follows the same system
• Prerequisite: Adjective Agreement with Noun Classes — numbers follow similar agreement patterns