In these lessons, we have mnemonics and songs to help you remember
Arithmetic (Spelling)
Spelling of Arithmetic:
A Rat In The House May Eat The Ice-Cream.
Arithmetic Properties
Commutative PropertyAssociative Property
To associate with people is to group up with them.
Distributive Property
To distribute something is to give it to everyone.
Which is the Numerator, which is the Denominator?
Divide - Multiply - Subtract -Compare -Remainder
Feet in a Mile
5280 feet = 1 mile
5 Tomatoes
5 to (m)ate oe(s)
5 2 8 0 -- or 5,280 feet in a mile
Greater Than or Less Than?
< or > ?
Which means greater than? Which means less than? How can you tell?
The alligator has to open its mouth wider for the larger number.
Metric Unit Prefixes
Metric Units of Measure in Order
* Kilo
* Hecto
* Deca
* Units [meter, liter, gram]
* Deci
* Centi
* Milli
Mode & Median
Mode
The mode is the value there are the most of.
Median
The median splits the data down the middle, like the median strip in a road.
Multiplying Signed Numbers
Analogies can help here.
From sports:
we = pos, win = pos, they = neg, lose = neg, good = pos, bad = neg
we win = good (pos × pos = pos)
we lose = bad (pos × neg = neg)
they win = bad (neg × pos = neg)
they lose = good (neg × neg = pos)
From friendship:
friend = pos, enemy = neg
From life:
good = pos, bad = neg
A good thing happening to a good person is good. (pos × pos = pos)
Order of Operations
The order of mathematical operations:PEMDAS Mnemonics
1. Please
Excuse
My Dear
Aunt Sally
2. Please
Educate
My Daughters
And Sons
3. Pursuing
Education
Means Dedication
And Study
Place Value and Decimals
A song to help you remember place value in decimalsRoman numerals
Roman numerals: I =1, V = 5, and X = 10.
I View Xrays.
Roman Numerals: I = 1, V = 5, X = 10, L = 50 , C = 100 , D = 500 and M = 1000.
I Viewed Xerxes Loping Carelessly Down Mountains.Roman numerals: L = 50 , C = 100 , D = 500 and M = 1000.
Lucy Can't Drink Milk.Use the first letter of each word to help you remember the integers zero through ten.
"Zowie! Only time travelers forge forward." said Sam, entering next Tuesday.
(Thanks Amy for the contribution)Speed, Distance and Time
D = distance traveled
S = Average speed
T = Time taken
You can use the formula triangle in the following way:
If you need to find D, cover up D in the triangle and you get S × T
If you need to find S, cover up S in the triangle and you get
If you need to find T, cover up T in the triangle and you get
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