# #commonsph

## Grade 4 Math | Place Value II

Positional notation (or place-value notation, or positional numeral system) denotes usually the extension to any base of the Hindu–Arabic numeral system (or decimal system). More generally, a positional system is a numeral system… Read More »Grade 4 Math | Place Value II

## Grade 4 Math | Place Value

Place value is the value of each digit in a number.  For example, the 5 in 350 represents 5 tens, or 50; however, the 5… Read More »Grade 4 Math | Place Value

## Grade 6 Math | Multiplication

Multiplication (often denoted by the cross symbol ×, by the mid-line dot operator ⋅, by juxtaposition, or, on computers, by an asterisk *) is one of the four elementary mathematical operations of arithmetic, with the other ones… Read More »Grade 6 Math | Multiplication

Addition (usually signified by the plus symbol +) is one of the four basic operations of arithmetic, the other three being subtraction, multiplication and division. The addition of two whole numbers results in the total amount or sum of… Read More »Grade 2 Math | Addition III Whole Tens

Addition (usually signified by the plus symbol +) is one of the four basic operations of arithmetic, the other three being subtraction, multiplication and division. The addition of two whole numbers results in the total amount or sum of… Read More »Grade 2 Math | Addition II

Addition (usually signified by the plus symbol +) is one of the four basic operations of arithmetic, the other three being subtraction, multiplication and division. The addition of two whole numbers results in the total amount or sum of… Read More »Grade 2 Math | Addition

## Puzzles | Maze ( Easy to Challenge)

A maze is a path or collection of paths, typically from an entrance to a goal. The word is used to refer both to branching tour puzzles through which… Read More »Puzzles | Maze ( Easy to Challenge)