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Missing Addends: Finding a Missing Part

2 minutes, 54 seconds

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Periwinkle background with white title text across the top that reads, "Missing addends. Finding a missing part." Below is a clip art drawing of a black-haired woman thinking about a math problem with a missing part.

An addend is a number that is added to another. Sometime students encounter math problems with missing addends. This video introduces the concept of finding a missing addend by using both addition and subtraction.

Media Details

Runtime: 2 minutes, 54 seconds

Topic: Education, Mathematics
Subtopic: Algebra, General Education, Mathematics
Grade/Interest Level: 3 - 6
Standards:

Release Year: 2015
Producer/Distributor: Teaching Without Frills
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Black and white still frame of man in glasses looking down at phone with lips parted in mid-speech. Caption. From there, you'll know whether he has enough money.

Man in tan suit and glasses sits with arm out, hand resting on staff. His mouth is open as if speaking fervently. Caption. In algebra, we don't dilly dally or mess about.

Digital illustration of a scale weighted with small goats in pink sweaters on both sides. Caption. Take away 4 goats, the scale evens out again.

Cartoon of man with cash in hand. Sign reads, "On sale now! All in one computer." Title bar to side reads, "50 dollars in account. Job, 8 dollars an hour." Caption. It pays 8 bucks an hour.

Man in tan suit and glasses grasps head and furrows brow with lips parted mid-speech. Caption. What are these symbols trying to tell us?

Inset of woman smiling with mouth open mid-speech. Text overlay reads, "Polynomial. An algebraic expression that contains 2 or more monomials. 2X plus 3. 4X squared minus 3X. 5X sup 4 plus X cubed minus 14." Caption. Right, all polynomials.

Canted closeup of woman with mouth open in mid-speech standing in front of a tree trunk. Caption. Remember a quadratic equation has a degree of 2.

Closeup of a White teenage girl's face. Her right hand holds a marker. Caption. Let's use different letters. Oops, sorry, I mean variables.

White teenage girl sitting cross legged on a blanket pointing to a formula written on a small whiteboard. Caption. So this is the formula for how many slices altogether.

Title text reads, “Applying Area to the Real World,” against colorful geometric shapes and lines.