6.7
1.7
0.3
20 to 30 is a 50% increase.
Oh, isn't that a happy little number we have here? Let's give it a gentle nudge and round it to the nearest hundreds place. 896 becomes 900 when we round it up, like a little bird soaring to new heights. Just a small adjustment can bring a lot of joy to our mathematical landscape.
0.7
Well, isn't that a happy little question! When we round 510 to the nearest 10, we look at the digit in the tens place, which is 1. Since 1 is closer to 0 than 10, we round down to 510. Just imagine that number nestled comfortably in its new rounded home!
650
236.00
6200
It is 23.12However, most schools teach you to always round 5 up (so the answer would be 23.13) but, while this is a simple rule to teach, it is not appropriate. Under this rule:• if the following digit is 0 you don't round;• if the following digit is 1, 2, 3 or 4 you round down; and• if the following digit is 5, 6, 7, 8 or 9 you round up.As a result you are more likely to be rounding up than rounding down and that introduces an upward bias into your calculations.The IEEE (Institute of Electronic and Electrical Engineers) standard 754 is to round 5 up or down so that the new last digit is even. See link for more: //en.wikipedia.org/wiki/Rounding#Round_half_to_even
Ah, let's take a moment to appreciate the number 830. When we round it to the nearest 10, it becomes 830. It's like giving a gentle hug to the number, keeping it close to its original value. Just a small adjustment to help it fit in with its new friends.