Mental Math: Using Compatible Numbers and Compensation
In this addition and subtraction activity, students learn how to solve addition and subtraction problems using compatible numbers and compensation. They then use these techniques to solve 16 math problems.
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Mental Math: Subtract Hundreds - Problem Solving 22.1
Four word problems are presented to second graders. For each, they can use their mental math skills to quickly subtract hundreds and arrive at an answer. This is a terrific inclusion for your Common Core math curriculum.
1st - 3rd Math CCSS: Adaptable
The Division Algorithm—Converting Decimal Division into Whole Number Division Using Mental Math
Make math much simpler with mental math methods. The 16th installment in a series of 21 looks at ways scholars can apply mental math to convert division problems into easier problems with the same quotient. Multiplying or dividing both...
6th Math CCSS: Designed
Fact Learning, Mental Computation, Estimation
Need help with mental math in your classroom? This guide is full of tips, tricks, and examples to help the teacher encourage learners to use their brain instead of a calculator. Practice problems are included with reasons how to use...
4th - 6th Math CCSS: Adaptable
Mental Math, Adding Decimals, Multiplication Facts
A thorough presentation is chock full of great tips on how to develop mental math skills, add decimals, and reinforce the memorization of multiplication facts. Learners solve a variety of problems, while getting tips along the way. An...
3rd - 4th Math
Rewrite Problems with Rational Numbers Using Different Properties of Multiplication and Division
Practice with the associative and commutative properties together during this video supporting mental math. The narrator goes step by step through two problems showing how your learners can switch around the terms to solve easier....
3 mins 6th - 8th Math CCSS: Designed
How Do You Estimate a Quotient Using Compatible Numbers?
Learn how to do approximations to find a quotient. Given some large numbers to divide, how can this problem be tackled? It's often a good idea to do an approximation first as this can help to be in the ballpark in finding the solution....
4 mins 4th - 7th Math