A collection of math mnemonics - songs, memory aids, some useful and some simply trivia, for various math facts and figures, arranged by major subjects: numbers, arithmetic, pre-algebra, algebra, geometry and trigonometry.

Number Mnemonics for Kids

- how to write numbers from 0 to 10
- number of days in each month
- multiply by 9
- dividend, divisor and quotient

- how to spell the word ARITHMETIC
- the arithmetic properties - Commutative, Associative, Distributive and Identity
- which is numerator and which is denominator
- how to multiply, divide, add and subtract fractions
- how to do long division
- how to convert feet to miles
- the greater than and less than symbols
- the prefixes of metric units
- mean, median and mode
- how to multiply signed numbers
- the order of operations (PEMDAS)
- place value and decimals
- roman numerals
- the relationship between speed, distance and time

- the Simple Interest formula
- the distance formula
- the speed, distance, time and the acceleration formulas
- the slope-intercept form of linear equation
- how to multiply binomials - FOIL
- a word problem solving strategy
- the quadratic formula

- geometry terms
- the value of pi
**(π)** - the formulas for the area and circumference of a circle
- the types of triangles: equilateral, isosceles, scalene, right
- types of angles - acute, right, straight, obtuse, reflex, full rotation
- complementary and supplementary angles
- angle properties
- perimeter and area
- area formulas

- trigonometric ratios for right triangles - SOHCAHTOA
- reciprocal trigonometric functions - cosecant, secant, cotangent
- the signs of trigonometric ratios for each quadrant - ASTC or CAST
- the values on the unit circle

Mental MathAddition | Mental MathMoney, Tipping and Percentage |

Mental MathSquaring Numbers | Learn Math Table for 2, 6,4, 7, 9 using patterns |

Mental MathEasy way to multiply numbers between 10 and 20 | Math TrickMultiplying 2-digit numbers |

Math TrickMultiply by 11 or 25 | Math TrickMultiply by 75, 101 or 111 |

Math TrickRemember the Unit Circle | Math TrickRemember the Trig Ratio of Special Angles |

"Read Your Mind" Math Tricks | The Sum Trick and Magic Square |

Math Card Tricks | Mental Math Worksheets |

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