Addition And Subtraction And Mental Calculation Strategies
Students add two or more number using mental calculations. Given a set of single and double digit numbers, students use rounding and estimation to plan a strategy for adding and subtracting numbers without using pencil and paper.
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Grade 1 Supplement Set A3 - Number & Operations: Addition & Subtraction on the Number Line
Hop your way through a mathematical equation with your first grade class as they learn the idea of moving up and down the number line. Adding and subtracting like little frogs is an engaging and clever way to teach/reinforce this concept.
K - 2nd Math CCSS: Adaptable
How Many Times Did You Add That?
Math whizzes practice multiplying using repeated addition. They watch a video clip from the Hershey's chocolate plant, read Hershey's Multiplication, and use grid paper to investigate multiplication as repeated addition. A page of five...
1st - 4th 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