Old Unit 5 Agendasmrs. Colville's Math Classroom

Old Unit 5 Agendasmrs. Colville's Math Class 1

1.OA.A.2 Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g. by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

Three Addends Word Problems

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• Contact Info Phone #: (248)684-8060 E-mail: Andrea.Colville@hvs.org.
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Understand and apply properties of operations and the relationship between addition and subtraction

1.OA.B.3 Apply properties of operations as strategies to add and subtract. Examples: If 8+3=11 is known, then 3+8=11 is also known (Commutative property of addition). To add 2+6+4, the second two numbers can be added to make a ten, so 2+6+4=2+10=12 (Associative property of addition).

Turn Around Trains
Turn Around Dominoes

1.OA.B.4 Understand subtraction as an unknown-addend problem. For example, subtract 10-8 by finding the number that makes 10 when added to 8.

Subtract from Ten