This unit starts with multiplication of whole numbers, which is a useful technique for all sorts of problems.

Example Question

Although this method works, it is better to multiply 3 by 7 which gives you the same answer.

Exercises

Work out the answers to the questions below and fill in the boxes. Click on the button to find out whether you have answered correctly. If you are right then will appear and you should move on to the next question. If appears then your answer is wrong. Click on to clear your original answer and have another go. If you can't work out the right answer then click on to see the answer.

Work out: (a) 2 × 3 = (b) 5 × 7 = (c) 6 × 3 = (d) 3 × 7 = (e) 5 × 4 = (f) 9 × 2 = (g) 8 × 5 = (h) 6 × 6 = (i) 9 × 4 = (j) 8 × 7 = (k) 9 × 8 = (l) 7 × 9 = (m) 6 × 7 = (n) 9 × 9 = (o) 8 × 6 =

Question 2
Look at each of the following statements and decide whether it is true or false.

(a)	5 × 4 = 4 × 5	False True
(b)	6 × 5 = 6 × 7	False True
(c)	8 × 9 = 4 × 36	False True
(d)	21 × 5 = 7 × 15	False True

Question 3
Jamil saves £5 per month from his pocket money.

(a) How much does he save in 4 months?
He saves £

(b) How long will it take him to save £30?
It will take him months.

Question 4
How many bottles are there in this crate?

There are bottles.

Question 5
Emma, Rachel, Sarah and Hannah go to a disco. It costs £3 each to get in.

How much do they pay altogether?
They pay £ in total.

Question 6
The picture shows the tiles on one wall in Sunnava's bathroom.

How many tiles are there on this wall? There are tiles.

Question 7
Packets of chewing gum are packed in a box. In a box there are 8 layers with 9 packets of chewing gum in each layer.

How many packets are there in the box?
There are packets.

Question 8
The picture shows the cars parked in a car park.

How many cars have been parked? cars

Question 9
A hotel has 9 floors. On each floor there are 7 windows.

How many windows are there in the hotel?
There are windows.