Making Sense of Properties of the Operations Is a Part

question 7

Multiple Choice

Making sense of properties of the operations is a part of learning about generalizations.Identify the statement below that a student might use to explain the associative property of addition.

• A)" When you add three number you can add the first two and then add the third or add the second and third and then the first.Either way you get the same answer".
• B)" When you add two number in any order you will get the same answer".
• C)" When you have a subtraction problem you can think addition by using the inverse".
• D)"When you add zero to any number you get the number you started with".

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Definitions:

Galvanometers

Instruments used to detect and measure small electric currents by deflection of a pointer in the presence of magnetic fields.

Wattmeter

A meter used to measure true power or watts.

True Power

Generally expressed as watts. Describes the amount of electrical energy converted into some other form.

Ohmmeter

An instrument for measuring electrical resistance in ohms.