Well, honey, if you wanna round 40 to the nearest 100, you're outta luck because 40 is closer to 0 than it is to 100. So, technically, you can't round 40 to the nearest 100 because it's already closer to 0. Just keep it real and accept that 40 is 40, no need to force it into a different neighborhood.
Rounding anything to the nearest hundred, means finding out if the hundred above is nearer or further than the hundred below. As you go up from 40 the 1st hundred you get to is 100. As you go down then the first one is zero hundred (that is, zero). The 100 is 60 higher, and the zero is 40 lower so that is nearest. So the answer is 0.
100
It is 800 because 40 is less than 50
To round 165 to the nearest hundred, you consider if 65 is closer to 0 or to 100. Since 65 rounds up to 100, 165 would round up to 200. In contrast, if the question had been to round 140 to the nearest hundred, 40 would round down to zero, so the answer would have been 100.
round 90 to the nearest ten
372 rounded to the nearest hundred is 400
40
300
It depends how round you want it.-- To the nearest 1/10th or to the nearest unit: 42-- To the nearest 10: 40-- To the nearest 100: Zero
35.87 rounded to the nearest ten is 40
100
100
10100