Basic Arithmetic
Factors, multiples, primes
Fractions
Algebra
Challenge
100

The basic elements of arithmetic

Numbers

100

Factors shared by 2 or more numbers

Common factors

100

The 4 types of fractions

Common fraction, decimal, percentage and ratio

100

The number part of a term

Coefficient

100

This refers to the fact if a number is even or odd

Parity

200

The symbols used in arithmetic to make numbers 

Digits

200

The highest common factor of 12 and 17

1

200

The types of common fractions

Proper, improper and mixed fractions

200

The letter part of a term

Variable or unknown

200

The four basic operations

addition, subtraction, multiplication and division 

300

The synonym of "whole number"

Integer

300

Numbers with two and only two factors, which are 1 and the number itself

Prime numbers

300

The number above the fraction line

Numerator

300

Only these can be added or subtracted to give a single term 

Like terms

300

The other way of saying "five to the power of two" 

"Five squared"

400

Numbers when divided by 2 have no remainder

Even numbers

400

The lowest two-digit prime number

11

400

The number under the fraction line

Denominator

400

The opposite of "expanding the bracket"

Factorisation

400

The other way of saying "Three to the power of three"

"Three cubed"

500

Whole numbers when divided by 2 have a remainder of 1

Odd numbers

500

The lowest common multiple of 3, 4 and 5 

60

500

The reciprocal of three over five

Five over three

500

A statement that uses relation symbols

Inequality

500

Why is 1 not a prime number?

Because it has only one factor.