We use estimation for a number of different reasons, but it requires us to realize that the answer we come to is not exact. This helpful for plan a wide area of things. Maybe you have decided to build a deck in your backyard, and you want to get an idea of how much planks of wood you need or how many boxes of deck screws you will need. This is where estimation comes to the rescue. To estimate the operations that are undergoing addition or subtraction we round their value to the nearest tens, hundreds, or thousands place value. Which ever value is present at the greatest value. If that place value is five or greater, we round it up. If the value is four or less, we round down. This selection of worksheets has students creating their own sum and difference problems. This is a really great idea to do whenever it applies to the math you are working with. This really engages students and gives them something to work for. This skill will most likely be used by students all the time. It gives us a really solid clue as to if the answer we determined is actual true.

These worksheets explain how to estimate the sums and difference of whole numbers, decimals, and mixed fractions. Step-by-step solutions to sample problems are provided. The later worksheets move away from integers and work on visual cues as a indicator. Rounding in order to solve the problem. Problems may be addition or subtraction. These problems will include whole numbers, decimals, and fractions.