100.
95,96,97,98,99 round them up to the ten, all 100 to the 100, all 100.
136 rounded to the nearest 100 is 100.
Since 45.7 is less than 50 you round to 100. Look at the first number after the 1 and if it less than 5 you round to 100. If it were 5 or more ( like 151.7) you round to 200
500
If you were asked to round to the nearest 100, any number between 50 and 99 inclusive would round to 100. Also any number between 101 an 149 inclusive would round to 100.
You can round it to the nearest 10: Its closer to 90 than it is to 100, so 90 is the answer. Or you can round it to the nearest 100, its closer to 100 than 0, so 100 is the answer
100
100
100
100.
round 90 to the nearest ten
98 would round up to 100.
You round up to 100.
200
100
100