Mnemonic Device: No Dirty Dogs! Explanation: To remember which number is the Numerator or the Denominator when working with fractions. Numerator Divided (by) Denominator when reading or converting fractions. Additional Notes: 3/53

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# Mnemonics for Arithmetic

A wide variety of mnemonic devices to make studying math easier!

## No Dirty Dogs! Numerator Divided (by) Denominator

## DRY MIX

Mnemonic Device: DRY MIX Explanation: to remember how to graph dependent and independent variables on a graph. DRY – dependent or responding variables are graphed on the Y-axis. The letter

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## Everybody’s Daddy, Mother, Sister, Brother, Reunion, Celebration

Mnemonic Device: Everybody’s Daddy, Mother, Sister, Brother, Reunion, Celebration Explanation: to remember the steps for long division. Estimate, Divide, Multiply, Subtract, Bring down, Redo (all steps), Check (by multiplying

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## Some People Have Curly Black Hair Thickly Plastered Back

Mnemonic Device: Some People Have Curly Black Hair Turning Purple Blue Some People Have Curly Black Hair Thickly Plastered Back Explanation: to remember trigonometric functions by first letters. Sine =

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## King Hector Died Mysteriously Drink Chocolate Milk.

Mnemonic Device: King Hector Died Mysteriously Drink Chocolate Milk Explanation: to remember the metric system from greatest to least Kilo, Hecto, Deka, Meter, Deci, Centi, Milli

## Six and Eight went out to skate; when they came back they were Forty-Eight.

Mnemonic Device: Six and Eight went out to skate; when they came back they were Forty-Eight. Explanation: to remember what 6 times 8 equals 6 x 8 = 48

## Multiplication of 9 times any number from 1 to 10

Mnemonic Device: To multiply by 9, hold your hands palms down in front of you. Then, fold down the finger (counting from the left pinky to the right pinky)

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## Kids Hate Doing Math During Cloudy Mondays Km Hm Dam M Dm Cm Mm

Mnemonic Device: Kids Hate Doing Math During Cloudy Mondays Explanation: to remember the units of measurement in the metric system. Km Hm Dam M Dm Cm Mm Kilometer Hectometer

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## Some Old Hags Can’t Always Hide Their Old Age

Mnemonic Device: Some Old Hags Can’t Always Hide Their Old Age Explanation: to remember the three basic functions and their ratios in Trigonometry Sine = Opposite/Hypotenuse Cosine = Adjacent/Hypotenuse

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## Negative B, negative B, plus or minus the square root, plus or minus the square root, of B squared minus 4 A C, B squared minus 4 A C, all over 2 A, all over 2 A.

Mnemonic Device: (sung to the tune of Frere Jacques) Negative B, negative B, plus or minus the square root, plus or minus the square root, of B squared minus 4 A

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