Re: summen av tallene blir den samme
Lagt inn: 16/09-2021 10:15
I am not sure my answers is right or not but i did this
Show the number as ABC
Reverse them, you get CBA where,
A. = hundred
B. - tens
C. = Units
So,
Hundreds Tens Units
A B C
C B A
SUBTRACT A – C O C – A
Subtract 1 hundred, add 9 tens and 10 ones
(-100, +90, +10 – 0)
Hundreds Tens Units
A – 1 B+ 9 C + 10
C B A
Subtract A- 1- C 9 10 + C – A
Reverse the answers and add,
Hundreds Tens Units
A – 1 – C 9 10 + C – A
10 + C – A 9 A – 1 – C
ADD, 9 18 9
SIMPLIFY, 10 8 9
So, we have the answer 1098. Hence, this is the sum we get no matter what number you add and subtract.
Show the number as ABC
Reverse them, you get CBA where,
A. = hundred
B. - tens
C. = Units
So,
Hundreds Tens Units
A B C
C B A
SUBTRACT A – C O C – A
Subtract 1 hundred, add 9 tens and 10 ones
(-100, +90, +10 – 0)
Hundreds Tens Units
A – 1 B+ 9 C + 10
C B A
Subtract A- 1- C 9 10 + C – A
Reverse the answers and add,
Hundreds Tens Units
A – 1 – C 9 10 + C – A
10 + C – A 9 A – 1 – C
ADD, 9 18 9
SIMPLIFY, 10 8 9
So, we have the answer 1098. Hence, this is the sum we get no matter what number you add and subtract.