# IGCSE Mathematics Paper-1: Specimen Questions with Answers 304 - 309 of 324

## Question number: 304

### Write in Short

Calculate, giving your answer in standard form.

### Explanation

## Question number: 305

### Write in Short

An athlete’s time for a race was 47.89 seconds.

Write 47.89 and your answers to (a) parts (i) and (ii) in order, largest first.

### Explanation

Here given the 43.78

And find the answers to (a) parts (i) and (ii) in order, largest first.

## Question number: 306

### Write in Short

Seven people were asked to guess the number of beans in a jar. Their guesses were

195,172,169,145,181,260,159

Work out the mean.

### Explanation

## Question number: 307

### Write in Short

Simplify the following expressions.

### Explanation

Here given the

## Question number: 308

### Write in Short

The price of a book is $30. Tara is given a discount of 20%. Calculate the discounted value?

### Explanation

The price of a book is $30.

Tara is given a discount of 20%

## Question number: 309

### Write in Short

x is an integer between 50 and 80.

Write down the value of x when it is

A prime factor of 154

### Explanation

is a composite number

Factor pairs:

Factors of

is an integer between and

So, answer is is between and .