# IGCSE Mathematics Paper-1: Specimen Questions with Answers 146 - 149 of 175

## Question number: 146

### Write in Short

Solve

### Explanation

Here, equation is

- So, now multiply 6 with the terms inside the brackets:
- Now, simplify as: .

## Question number: 147

### Write in Short

The scale on a map is 1: 250000 and road is 4.6 centimeters long on the map. Find actual length of the road in kilometers.

### Explanation

Here, meaning of 1: 250000 is 1 cm long road is magnified by 250000 times on the map.

- So, here 4.6 cm long road on the map can be
- Now, 100 cm = 1 m, so 115000 cm =?

- Now, 1000 m = 1 km, so 11500 m =?

- So, length of road is 11.5 kilometers.

## Question number: 148

### Write in Brief

Solve

### Explanation

Here,

- So, as per BODMAS calculation, expression will be:
- So, first of all as per BODMAS (Brackets, Order, Division, Multiplication, Addition, Subtraction) brackets will be removed, in that also first of all multiplication will be:
- Then in brackets subtraction will be:
- Now, in brackets multiplication will be:
- Now, division will be:
**.**

## Question number: 149

### Write in Short

The average temperatures in Toronto of Canada for each month are shown in the table below.

Month | Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |

Temp | -4.63 | -4.13 | 0.43 | 6.27 | 11.97 | 17.23 | 20.6 | 20.3 | 16.3 | 10.1 | 4.67 | -1.53 |

(a) Which month has the highest average temperature?

(b) Find the difference between the average temperatures in June and December.

### Explanation

Here,

(a) Here, as shown in table, June and July has highest temperature but out of which **July** has **20.6** which is higher than all.

(b) Here, average temperature of June is 17.23 and December is -1.53.

So, difference between the average temperatures in June and December is: which means temperature in June is higher than in December.