Sometimes dealing with decimals is so much easier than dealing with fractions. The ninth lesson in a 21-part module has the class consider situations when it might be easier to add or subtract fractions by first converting to...

In this math worksheet, pupils learn to estimate sums and differences by completing step by step exercises. There is one word problem which is the example, and then students can choose from other estimation activities to do with a partner.

By rounding, scholars find that adding money amounts becomes a breeze! They round two and three-digit numbers (with decimals) in these addition problems to get approximate sums. For each, mathematicians write the new addition equation...

In this estimation worksheet, 4th graders estimate the sum or difference of 15 math problems. Students write their answers underneath each math problem on the worksheet.

Collaborative learners will see the geometric addition of functions by graphing the sum of two graphed curves on the same coordinate plane. This task then naturally flows into giving learners the algebraic representation of the curves...

A six-question interactive tasks mathematicians to solve addition and subtraction problems using front-end estimation. Question types consist of multiple-choice and true or false. A set of wooden beams that can be measured using moveable...

In this estimation of sums and differences instructional activity, 7th graders solve 20 different problems that are related to estimation of numbers. They add or subtract each problem as shown. Then, students estimate the sums and...

For this estimating sums worksheet, students round numbers to the greatest place and then add them to solve 23 problems. Students also solve 2 test prep questions.

For this estimating sums worksheet, learners review two steps to help them estimate to find sums. Students then round each addend to the nearest ten and use the number line for help. Learners estimate the sums and write the numbers on...

Captivate your class by having them find the value of their names, different zoo animals, musical instruments, etc.,with a mental math activity. Using the coding formula listed, children learn to fluently estimate and calculate...

Enhance math vocabulary instruction with a set of flash cards. The set displays words with bold font and corresponding picture cards with labels. Terms include estimate, regroup, round, add, and sum.

First graders practice rounding 4 digit numbers using place value concepts. In this estimating sums and differences lesson, 1st graders explore clustering, rounding, and front end estimation as methods for rounding decimals.

The more rectangles, the better the estimate. Using the interactive, pupils explore estimating the area under a curve using left-hand sums. Learners respond to challenge questions on how to get better estimates using the same technique.

Students explore the concepts of estimating and rounding. In this estimating and rounding lesson, students play a game of tic-tac-toe. Students pick items and must estimate their cost by rounding. Students estimate the costs of pretend...

Youngsters discover the difference between estimating and guessing. They estimate how many items are contained in a jar as they read a story. After the story, pupils discover the differences between estimating and guessing and create a...

Take a spin to determine experimental probability. Small groups spin a spinner and keep track of the sums of the spins and calculate the resulting probabilities. Pupils use simulated frequencies to practice finding other probabilities to...

In this estimation and rounding worksheet, students solve ten multiplication problems by using estimation and rounding skills. This is an interactive worksheet.

Is it possible to add infinitely long decimals? As pupils complete the examples in the ninth lesson of this 25-part series, they determine that adding these decimals cannot be done without error. Their task is then to determine the size...

Challenge your class to use straight lines when estimating the length of a curve. An engaging interactive allows individuals to place line segments one after another along the arc. Learners determine that the more lines used, the better...

In this rounding to find the sums instructional activity, students round to the nearest thousandths and add. Students solve nine problems. 

In this math worksheet, students answer multiple choice questions about odd numbers, standard form, place value, and more. Students complete 10 problems involving up to 5 digit numbers.

In this estimating and rounding worksheet, learners complete a set of 10 multiple choice questions. Students may click on a link for answers or to print page.

In this math worksheet, learners work at home with a family member to add and subtract decimals in a sample check register. Students add deposits, subtract withdrawals and determine the balance of the account.

In this rounding to add instructional activity, students round addends to the nearest ten and estimate sums for 14 problems. One example is completed; a website reference is given.