Glossary
Index Number
An index number measures how a quantity has changed relative to a reference level, expressed as a percentage of that base without a unit. It compares values across time or place, and a value above 100 shows an increase from the base while below 100 shows a decrease.
Meaning
An index number measures how a quantity has changed relative to a reference level, expressed as a percentage of that base without a unit. It compares values across time or place, and a value above 100 shows an increase from the base while below 100 shows a decrease.
Where it appears in Add Math
You meet Index Number in the Index Numbers chapter of SPM Additional Mathematics. Knowing the term precisely matters in the exam: questions often hinge on reading a keyword correctly, and because SPM marking is analytic, using the right definition in your working helps secure method marks.
Our teachers make sure a student can not only recite what Index Number means but use it fluently in a full solution.
The term in three languages
Because the SPM Add Math paper is bilingual (BM/EN), it helps to know this term in each language: Index Number (EN) · Nombor Indeks (BM) · 指数（Index Number） (中文)
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