Middle School Maths: Number
Decimals
Rounding
Can be written in expanded fraction form
Fractions
Dividing
Multiply by reciprocal
Multiplying
or Cancel down first, then
Mulitply numerator, then multiply denominator
Adding/Subtracting
Must have same denominator
Add numerator and place over denominator
Types
Equivalent
Two fractions representing same proportions
Mixed Number
Integer plus proper fraction
Improper
Numerator larger than denominator
Proper
Numerator smaller than denominator
Integers
Order of operations
BEDMAS
Divsion rules
- divided by - = +
- divided by + = -
+ divided by - = -
+ divided by + = +
Multiplication rules
- mulitplied by - = +
- mulitplied by + = -
+ mulitplied by - = -
+ mulitplied by + = +
Natural Numbers
Multiples
LCM
Smallest multiple common to two or more numbers
Result of multiplying a number by any other natural number
Factors
HCF
Largest factors common to two or more numbers
All numbers which divide evenly into a number
