Addition Strategies: Compensation
In this math worksheet, students learn the addition strategy of compensation: adding an easy number like 10, 20 or 30 and then subtracting a very small number like 1 or 2. Students solve 12 problems on the page.
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Area and Perimeter of Irregular Shapes
Evaluate young mathematicians' understanding of area and perimeter with this series of three assessment tasks. Challenging students to not only calculate the area and perimeter of irregular shapes, but to explain in writing their...
3rd - 6th Math CCSS: Adaptable
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
What Subtraction Strategy Did You Use?
There's more than one way to subtract! After reviewing different subtraction strategies for two-digit numbers, including standard algorithm, think addition, compensation, and split/jump, kids decide which strategy makes the most sense...
2nd - 3rd Math CCSS: Designed
Addition and Subtraction Pick n Mix
Teach your class how to mentally solve whole number addition and subtraction problems using compensation from tidy numbers including equal additions. They use appropriate recording techniques and predict the usefulness of strategies for...
2nd - 4th Math CCSS: Adaptable