Certain modern spoken languages do not use the decimal number system

the verdict

SUPPORTED

the evidence backs this

Recorded sources

3 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that certain modern spoken languages do not use the decimal number system?

Yes. While decimal numeral systems are widespread globally, empirical linguistic research confirms that certain languages utilize non-decimal bases (such as base-20) or possess restricted quantification inventories without a standard decimal base.

Verdict: SUPPORTED · 3 sources for, 0 against · Last checked 6 Aug 2026

The analysis

The claim asserts that certain modern spoken languages do not use the decimal number system. Retrieved papers such as [7] explicitly discuss base-20 systems, while [4] and [9] discuss languages with restricted systems or alternative compositional anchors lacking standard decimal bases. Thus, the evidence fully supports the claim.

Evidence for · 3

Making up numbers in Pano languages: idiosyncratic and unconventional base-free quantification inventories in Amazonia.

2025

Discussion of Amazonian Pano languages reveals systems that lack proper numerals or standard bases.

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R, Z., R, N., M, P., & A, V. (2025). Making up numbers in Pano languages: idiosyncratic and unconventional base-free quantification inventories in Amazonia.. doi.org. https://doi.org/10.1098/rstb.2024.0224

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More for · 2

The cognitive processing of numerical bases: a review of empirical evidence.

2025

Reference to non-decimal bases, such as base-20 numeration systems, demonstrates that not all languages use a decimal base.

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SM, G., M, I., & J, B. (2025). The cognitive processing of numerical bases: a review of empirical evidence.. doi.org. https://doi.org/10.1098/rstb.2024.0221

A phylogenetic analysis of numeral anchor choice in New Guinea and lowland South America.

2025

Noting that some languages feature restricted numeral systems or alternative compositional anchors rather than decimal bases.

Get citation

A, V., E, C. A., & C, R. (2025). A phylogenetic analysis of numeral anchor choice in New Guinea and lowland South America.. doi.org. https://doi.org/10.1098/rstb.2024.0222

Related receipts

Is it true that certain languages structure spoken numbers in a non-linear or mixed-up order? SUPPORTED related question, same topic

What does the evidence say?

Receipt History

first checked06 Aug 2026

judged → SUPPORTED · 8106 Aug 2026

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