Khan Academy
Khan Academy: Estimating With Multiplying Decimals
Estimating with multiplying decimals. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Estimating With Dividing Decimals
Student practice estimating with dividing decimals.
Khan Academy
Khan Academy: Estimating With Subtracting Decimals
Student practice over estimating with subtracting decimals.
CK-12 Foundation
Ck 12: Elem Math: Rounding Decimals to Specific Units in Word Problems
[Free Registration/Login may be required to access all resource tools.] In this learning module, students practice rounding decimals to the stated place value position. Includes video demonstrating a sample problem and a set of practice...
CK-12 Foundation
Ck 12: Elem Math: Rounding the Same Decimal to Different Decimal Places
[Free Registration/Login may be required to access all resource tools.] A video and practice questions where students are presented with a decimal number and must round it to three different decimal place value positions. [2:14]
Khan Academy
Khan Academy: Estimating With Adding Decimals
For example, estimate 12.93 + 6.1 to be 19. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Elem Math: Rounding to Nearest 3 Decimal Places or Thousandths Place
[Free Registration/Login may be required to access all resource tools.] A video and practice questions on how to round numbers to the nearest thousandths decimal place. [1:24]
CK-12 Foundation
Ck 12: Elem Math: Rounding to the Nearest Decimal Place or the Tenths Place
[Free Registration/Login may be required to access all resource tools.] A video and practice questions on how to round numbers to the nearest tenths decimal place. [1:26]
Primary Resources
Primary Resources: Decimals
A large collection of teacher resources dealing with decimals at many different levels. There are worksheets, PowerPoints, smartboard presentations, Excel, Word, and pdf files for the teacher's use.
McGraw Hill
Glencoe: Self Check Quizzes 1 Rounding Decimals
Use Glencoe's randomly generated self-checking quiz to test your knowledge of rounding decimals. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the "Check It" button...
AAA Math
Aaa Math: Circumference of a Circle
Calculating the circumference or perimeter of a circle has gotten easier with this formula and practice for finding the circumference.
CK-12 Foundation
Ck 12: Elem Math: Maximum or Minimum Possible Value of a Rounded Decimal
[Free Registration/Login may be required to access all resource tools.] In this learning module, students are told the number of digits after a decimal point and the decimal's value when rounded. They must identify the maximum and the...
AAA Math
Aaa Math: Estimation
Improve your estimation and rounding skills with these interactive games that are challenging and fun. Excellent skills practice for rounding, estimating sums and differences, and front-end estimation. Links to lesson plans, teacher...
E-learning for Kids
E Learning for Kids: Math: Hamburger Restaurant: Operations With Money
On this interactive site students learn to round numbers to the nearest ten thousand, determine the place value of any digit, and use ordinal numbers.