Maths with Graham
Grid Multiplication for car lovers!
Gap-fill exercise
Fill in all the gaps. Press "Check" to check your answers when you have finished.
To multiply 12 x14 one way to do it is put it in a grid as follows. 12 is 10 and 2 and 14 is 10 and 4.
x
10
2
Total
10
100
20
120
4
40
8
48
Total
140
28
168
Adding up the totals vertically and horizontally is a good way of checking you haven't made a mistake.
Now you try.
This car travelled at an average speed of 42mph for 3hours. How far did it travel?
Complete the grid.
x
40
2
Total
3
Bonus point-what is the make and model of the car?
This car has CO2 emissions of 122g/km. How much CO2 will it produce if it drives from Sheffield to London (270 km)
x
100
20
2
Total
200
70
270
Bonus point-what is the make and model of the car?
This car is on sale for £7890. If the dealer sells 4 cars at this price what will his takings be?
x
7000
800
90
Total
4
Bonus point-what is the make and model of the car?
The average mpg of this car is 54 mpg. How far should it be able to travel on 12 gallons of petrol?
x
50
4
Total
10
2
Total
Bonus Point. What is the make and model of this car?
This car has an mpg of 49. On a journey from Manchester to Sheffield it uses 0.8 gallons of fuel. How many miles was the journey?
x
40
9
Total
0.8
Bonus Point. What is the make and model of this car?
This car does 58 mpg. How far will it be able to travel on 12 gallons of fuel?
x
50
8
Total
10
2
Total
Bonus Point. What is the make and model of this car?
This car has CO2 emissions of 109g/km. What will the emissions be on a journey from Wakefield to Rotherham? (35km)
x
100
9
Total
30
5
Total
Bonus Point. What is the make and model of this car?
A dealer sells 4 of these cars at £7900 each. How much does he make? This time you need to fill in some of the question part of the grid too.
x
Total
4
Bonus Point. What is the make and model of this car?
This car gets 57.6 mpg. How far should it travel on 12 gallons?
x
Total
10
2
Total
Bonus Point. What is the make and model of this car?
This car is electric.
What are its' CO2 emissions?
g/km
Bonus Point. What is the make and model of this car?
Check
OK
Maths with Graham