To round to nearest hundred, look at the tens digit: if it is 5 or more round up otherwise round down; 2 is not 5 or more, so round down: 5921 → 5900 to the nearest hundred.
801's nearest ten would be 800 801's nearest hundred would be 800
0.17
I like making longer answers.. Okay. So 952. We put it onto a mountain like scale. Over 50 you go rounding up lower then 50 you go down.. at 50 you also round up This also works with 10's, 50's, 100's, 1000's.. The list goes on. But so if it's 952.. You round that up. so the answer is 1000. Just to show this strategy with another example lets use the number If you were to round this number to the nearest 10 it's 520. With hundreds it's rounded to 1000.
300
685 rounded to the nearest integer is 685.
11,000. 982 rounded to the nearest hundred is 1,000 (effectively 10 100's).
700
To round to nearest hundred, look at the tens digit: if it is 5 or more round up otherwise round down; 2 is not 5 or more, so round down: 5921 → 5900 to the nearest hundred.
801's nearest ten would be 800 801's nearest hundred would be 800
0.17
Round your factors to the nearest 10's, 100's 1000's, etc. Then multiply. You should be able solve the problem more or less in you head. If you need to use a pen and paper, you must round to and even higher place. When rounding, if the place your rounding ends in 1-4, you round down. 5-9= round up. For example: 14 rounded to the nearest 10 =10. 16 rounded to the nearest 10=20. 123 rounded to the nearest 100= 100. 191 rounded to the nearest hundred= 200.
2.8
It is 20,000 when rounded to the nearest 10,000's place
3,000 already divides evenly into 100's, so 3,000 itself is the answer.
137
The answer is 10 seconds.