rounding
Rounding is looking at the numbers near the one you are using. Depending on the instruction that number will go up or down.
It will always end with at least one zero if you have the right answer.
If your number ends with 1, 2, 3 or4 you go down to the nearest number that ends with a zero.
If your number ends with 5, 6, 7, 8, or 9 you go up to the nearest number that ends with a zero.
For example
49 would be 50,
32 would be 30,
67 would be 70
55 would be 60
Rounding to the nearest 100 uses the same technique but with bigger numbers.
All numbers should end it two zeros
If your last two digits are between 01 and 49 then you would round it down.
If your last two digits are between 50 and 99 then you would round it up.
For example
478 would be 500
195 would be 200
623 would be 600
647 would be 600
535 would be 500
Rounding to the nearest 1000
Same technique still and this time should have three zeros at the end
If your number ends with 001 to 499 you round it down
If your number ends 500-999 you round it up
For example
5130 would be 5000
4975 would be 5000
6212 would be 6000
3846 would be 4000
9719 would be 10,000
It will always end with at least one zero if you have the right answer.
If your number ends with 1, 2, 3 or4 you go down to the nearest number that ends with a zero.
If your number ends with 5, 6, 7, 8, or 9 you go up to the nearest number that ends with a zero.
For example
49 would be 50,
32 would be 30,
67 would be 70
55 would be 60
Rounding to the nearest 100 uses the same technique but with bigger numbers.
All numbers should end it two zeros
If your last two digits are between 01 and 49 then you would round it down.
If your last two digits are between 50 and 99 then you would round it up.
For example
478 would be 500
195 would be 200
623 would be 600
647 would be 600
535 would be 500
Rounding to the nearest 1000
Same technique still and this time should have three zeros at the end
If your number ends with 001 to 499 you round it down
If your number ends 500-999 you round it up
For example
5130 would be 5000
4975 would be 5000
6212 would be 6000
3846 would be 4000
9719 would be 10,000