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Lesson 1: Rounding to the nearest 10 or 100

# Rounding to the nearest 10 on the number line

Round numbers to the nearest ten using a number line.

## Want to join the conversation?

• Can the number infinity be rounded?
• sorry,and infinity is the concept of numbers being infinte or that there is no largest number,so therefore you cannot round infinity
• How would you go about explaining and rounding a number like 120 to the nearest 10?
• 120 itself is a multiple of 10

[0,10,20,30,40,50,60,70,80,90,100,110,120]

So, 120 "rounded to nearest 10" would still be 120
• so if I said that 34 rounding the nearest ten would be 40?
• You cannot say that, 34 is closer to 30, so that would be the answer.
• Did you know there's a easy way of remembering how to do it this is how I remember is 4 or less just ignore five or more add one more

Stay safe,
Aiden.
• My teacher taught us: five or more raise the score, four or less let it rest.
• I think I might have spotted a mistake in one of the pratice test questions. Here's the question:

Which number line highlights all whole numbers that round to 200 if we are rounding to the nearest hundred?

A) 150 and 240
B) 200 and 299
C) 150 and 249

The problem is that option A is considered INCORRECT. Shouldn't BOTH options A and C be correct? And actually, isn't 240 even closer to 200? Or am I doing something wrong?
• "C" is the correct value. The problem asked for all whole numbers that would round to 200. Option "A" does not have all the values. Only option C has all the numbers.
• So pretty munch 36 rounded to the nearest ten is 40 right?
• Yes, because 36 is closer to 40 than 36 is to 30.

Have a blessed, wonderful day!
• how do you anderstand the hint
• no , infinity can only be rounded to ex-infinity :)