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Lesson 2-1 Using Mental Math to Add & Subtract
Grade Level:
4
Subject:
Math
Topic:
How can you use mental math to add to subtract?
Objective:
Students will develop and use strategies and methods for whole number computations and decimal sums and differences in order to solve problems with efficiency and accuracy.
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Prep:
Do page 89 together, page 90-91 in table group, page 92 independently. Homework page 93-94.
Materials:
dry erase markers.
Extension: Students will write examples of each addition property. Students will read their examples to their partner. The partner will listen to determine if the example reflects the property.
