The Properties of Number and the Order of Operations
* Required
Commutative Law is...
any 2 numbers can be added together, in any order.
any two numbers can be divided by each other in any order
using brackets to work out an equation
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Associative Law is...
Using brackets to subtract numbers
Adding 2 or more numbers in any order
multiplying numbers using brackets
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Distributive Law is...
a combination of multiplication and division
the best way to distribute numbers
a combination of multiplication and addition
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Algebra ...
only uses x and y to represent numbers
uses letters and symbols to solve equations
isn't like solving a puzzle
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In the equation, x - 12 = 9 the x is...
7
21
3
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Solve 9 - x = 3½
x = 5½
x = 11½
x = 6½
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Solve y - 5 = 9
y = 14
y = 4
y = 10
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Solve -7 + x = 3
x = 4
x = -10
x = 10
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Solve 4x = 16
x = 12
x = 8
x = 4
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Solve 36 = 9x
x = 3
x = 45
x = 4
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BODMAS stands for...
Bedtime over dinner, meat after sweets
Brackets, Order, Multiplication and Division, Addition and Subtraction
Brackets or Multiplication, division, addition, subtraction
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Solve 9 x (5 + 2) =
47
54
63
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Solve 5 x 5 + 8 / 4 =
22
8
27
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Name
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