# Wikijunior:Introduction to Mathematics/Glossary

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## D[edit | edit source]

**decimal**- a small circle that separates the whole part and fraction part in a decimal number**decimal number**- a way to show a mixed fraction with the whole part to the left of a decimal and the fraction part to the right of the decimal**decimal place**- Similar to*place amounts*, every decimal place shows one tenth of the amount to the place to the left.**denominator**- The bottom number in a fraction, it shows if the pieces of a whole number are big or small.

## F[edit | edit source]

**fraction**- a number that shows only part of a whole amount

## M[edit | edit source]

**mixed fraction**- a fraction and a whole number together

## N[edit | edit source]

**negative number**- A number that is less than zero, it shows a lack of something.**number line**- A way of showing positive and negative numbers, it shows all the numbers as marks on a line.**numeral**- Signs such as*1*,*6*, or*4*, they are used to show numbers.**numerator**- The top number in a fraction, it shows the number of pieces of a whole number.

## P[edit | edit source]

**place amount**- the amount a numeral shows because of its position in a number**positive number**- a number that is greater than zero

## W[edit | edit source]

**whole number**- A normal number like a person uses for counting, it can show an amount of single things. Negative numbers can be whole numbers too.