Home

History Of Math

Addition

Subtraction

Multiplication

Division

Number Notation

Multiplication Table

Divisibility Rules

Division – an operation of finding one of factors by a product and another factor: 48÷4 = 12. Here  48  is a dividend,  4 – a divisor,  12 – the quotient. At dividing integers a quotient can be not a whole number. Then this quotient can be present as a fraction. If a quotient is a whole number, then it is called that numbers are divisible, i.e. one number is divided without remainder by another. Otherwise, we have a division with remainder. For example, 23 isn’t divided by 4 ; this case can be written as:  23 = 5×4 + 3.  Here 3 is a remainder. Math tricks 1: Dividing by grouping 345÷15 =(300÷15)+(45÷15) =20+3 =23 In example here,separate dividend into two groups:(300÷15)+(45÷15),and add up the answer. Math tricks 2: Dividing by augmenting Example: 418÷11 =(440÷11)-(22÷11) =40-2 =38 In example here,418 was augmented to 440,that is 418=440-22 Math tricks 3: Dividing by break apart the divisor 325÷25 =325÷(5×5) =325÷5÷5 =65÷5 =13 In example here,break 25 to 5 and 5(25=5×5).

Back to top     Home