1. ADDITION and SUBTRACTION
Maths

2. Descending means HIGHEST to LOWEST Or D for DOWN Ascending means
Ordering Numbers
When learning about adding and subtracting it is important to understand the place value of numbers and how we order them.
Ordering numbers in ASCENDING ORDER
Ordering numbers in DESCENDING ORDER
Descending means
HIGHEST to LOWEST
Or D for DOWN
Ascending means
LOWEST to HIGHEST

3. Ordering numbers
Lets order these numbers in Ascending Order
274
301
345
415
599
999

4. Ordering numbers
Lets order these numbers in Descending Order
4462
1563
835
825
614
369

5. Subtraction using PLACE VALUE
Lets subtract 245 from 456
Remember that there are only 10 digits ( ) so all we need to know is how to subtract those numbers together if we use place value
Thousands
Hundreds
Tens
Ones 4 5 6 2 2 1 1

6. Subtraction using PLACE VALUE
Lets subtract 369 from 598
Remember that there are only 10 digits ( ) so all we need to know is how to subtract those numbers together if we use place value
BORROW 8
Thousands
Hundreds
Tens
Ones 5 9 8 3 6 10 18 2 2 9 ?

7. Subtraction using PLACE VALUE
Lets subtract 415 from 734
Remember that there are only 10 digits ( ) so all we need to know is how to subtract those numbers together if we use place value
BORROW 2
Thousands
Hundreds
Tens
Ones 7 3 4 1 5 10 14 3 1 9 ?

8. Subtraction using PLACE VALUE
Lets subtract 245 from 734
Remember that there are only 10 digits ( ) so all we need to know is how to subtract those numbers together if we use place value
BORROW
BORROW 6 12 2
Thousands
Hundreds
Tens
Ones 7 3 4 2 5 10 10 14 4 8 9 ?

9. Subtraction using PLACE VALUE
Lets subtract 165 from 434
Remember that there are only 10 digits ( ) so all we need to know is how to subtract those numbers together if we use place value
BORROW
BORROW 3 12 2
Thousands
Hundreds
Tens
Ones 4 3 1 6 5 10 10 14 2 6 9 ?

10. Subtraction using PLACE VALUE
Lets subtract 245 from 456
Remember that there are only 10 digits ( ) so all we need to know is how to subtract those numbers together if we use place value
Thousands
Hundreds
Tens
Ones 4 5 6 2 2 1 1

11. H T O 8 2 3 2 1 REMEMBER Do some yourself! I will write it like this:
You will write it like this: H T O
8 2
REMEMBER

12. Do Some Yourself!