80
You would round it down... to 80.
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80
Well honey, 75 rounded to the nearest tens' number is 80. It's not rocket science, just bump that 5 up to a nice, round 10. Voila, you've got yourself an 80.
80
Well, darling, the least number that rounds to 80 when rounded to the nearest 10 is 75. You see, when you round 75 to the nearest 10, it becomes 80. So, there you have it, simple math for a simple question.
The least number that can be rounded off to 80 to the nearest integer is 75.
80
80
You would round it down... to 80.
If x is the multiple of y then LCM of x and y is x. Here, 80 is the multiple of 10 therefore LCM of 10 & 80 is 80.
80
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80