ADDITION and SUBTRACTION Maths

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

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

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

Subtraction using PLACE VALUE Lets subtract 245 from 456 Remember that there are only 10 digits (0123456789) 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

Subtraction using PLACE VALUE Lets subtract 369 from 598 Remember that there are only 10 digits (0123456789) 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 ?

Subtraction using PLACE VALUE Lets subtract 415 from 734 Remember that there are only 10 digits (0123456789) 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 ?

Subtraction using PLACE VALUE Lets subtract 245 from 734 Remember that there are only 10 digits (0123456789) 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 ?

Subtraction using PLACE VALUE Lets subtract 165 from 434 Remember that there are only 10 digits (0123456789) 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 ?

Subtraction using PLACE VALUE Lets subtract 245 from 456 Remember that there are only 10 digits (0123456789) 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

H T O 8 2 3 2 1 REMEMBER Do some yourself! I will write it like this: 482 - 321 You will write it like this: H T O 8 2 3 2 1 REMEMBER

Do Some Yourself! 598 - 369 535 - 213 885 - 647 945 - 329 641 - 598