GCSE Maths Foundation Revision

Front

What is the nth term of an arithmetic sequence?

Back

The nth term of an arithmetic sequence can be found using the formula: a_n = a + (n-1)d, where 'a' is the first term and 'd' is the common difference.

Front

What is the common difference in an arithmetic sequence?

Back

The common difference is the difference between consecutive terms in an arithmetic sequence. For example, in the sequence 5, 13, 21, 29, the common difference is 8.

Front

How do you solve the equation 2n + 3 = 23?

Back

To solve for n, subtract 3 from both sides to get 2n = 20, then divide by 2 to find n = 10.

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

Front

What is a composite number?

Back

A composite number is a natural number greater than 1 that is not prime, meaning it has more than two positive divisors.

Front

What is a factor?

Back

A factor is a number that divides another number without leaving a remainder.

Front

What is a multiple?

Back

A multiple of a number is the product of that number and an integer.

Front

How do you convert a decimal to a fraction?

Back

To convert a decimal to a fraction, write the decimal as a fraction with a denominator of 1, then multiply the numerator and denominator by 10 for each digit after the decimal point.

Front

What is the simplest form of the fraction 30/100?

Back

The simplest form of 30/100 is 3/10.

Front

How do you isolate a variable in an equation?

Back

To isolate a variable, perform inverse operations to both sides of the equation until the variable is alone on one side.