kungfu math p3 slide3 (subtraction)

• subtraction of numbers up to 4 digits

• use of the terms ‘difference’

What will we learn today?

Whole Numbers

Subtraction

Before we begin, let’s recall what is place values.

In the number 1245,

tens ones

In the number 1245,

thousands

hundreds

So, in a 4-digit number,

There are

Thousands place

Hundreds place

Tens place

Ones place

Find the difference of 1369 and 5240.

a) 3871

b) 3889

c) 6509

d) 6609

Did you notice the important information?

Find the difference of 1369 and 5240.

a) 3871

b) 3889

c) 6509

d) 6609

The word ‘difference’ refers to subtraction of the numbers.

Find the difference of 1369 and 5240.

a) 3871

b) 3889

c) 6509

d) 6609

By using workings, find the answer.

Counter-check your workingswith mine on the next page.

5240- 1369

1

3 1

5240- 1369

71

3 11+1

5240- 1369

871

1+14

5240- 1369

3871

4

Find the sum of 1369 and 5240.

a) 3871

b) 3889

c) 6509

d) 6609

Here’s another example.

In 3050, find the difference between the value of digit 3 and the value of digit 5.

Do you need any help?

In 3050, find the difference between the value of digit 3 and the value of digit 5.

Digit ‘3’ 3000Digit ‘5’ 50

Find the values of digit ‘3’ and ‘5’.

In 3050, find the difference between the value of digit 3 and the value of digit 5.

3000 – 50 = 2500

‘difference’ refers to subtraction of numbers.

Are you ready to try out the questions?