Place value is the value of each digit in a number based on its position. For example, the number 627 is composed of 6 hundreds, 2 tens, and 7 ones. A digit's value increases by a factor of 10 as you move to the left and decreases by a factor of 10 as you move to the right.
[br][br]Rounding decimals means simplifying a decimal to a desired level of accuracy, such as the nearest tenth or hundredth. To do this, identify the digit in the place value you're rounding to, then look at the digit immediately to its right. If this right-hand digit is 5 or greater, you "round up" by increasing the target digit by one. If the digit is 4 or less, you "round down" by keeping the target digit the same. Drop all subsequent digits to the right to get your rounded number.
What come to your mind when you hear the words decimals?
Do we use decimals in money?[br]