Because that's how the addition and multiplication functions were defined.
A number with more than 2 digits must be at least 100. Any two numbers of this kind will give an answer that is at least 10000. So there are no ways to make 144 with multiplication of numbers with more than 2 digits.
Multiplication by an integer is the same as repeated addition.
Simple and Traditional multiplication. Then there is Long Multiplication. used for larger numbers. e.g. Simple multiplication 3 x 2 = 6 Long Multiplication. 33 x 22 = 33 x 22 660 66 726 ====
Multiply:1x15=1515x1=153x5=155*3=15*With multiplying fractions, there are an infinite number of ways to get the product of 15, but the four listed above are used by multiplying whole numbers.
10
Because that's how the addition and multiplication functions were defined.
A number with more than 2 digits must be at least 100. Any two numbers of this kind will give an answer that is at least 10000. So there are no ways to make 144 with multiplication of numbers with more than 2 digits.
Multiplication by an integer is the same as repeated addition.
addition subtraction multiplication division
You are working with numbers. One is a whole number and the other is a fraction of a whole number (with a decimal point, etc). You apply the same principles of subtracting one number from another or a fraction of one number from a fraction of another. Numbers is numbers!
With whole numbers, there are five ways.
Simple and Traditional multiplication. Then there is Long Multiplication. used for larger numbers. e.g. Simple multiplication 3 x 2 = 6 Long Multiplication. 33 x 22 = 33 x 22 660 66 726 ====
Multiply:1x15=1515x1=153x5=155*3=15*With multiplying fractions, there are an infinite number of ways to get the product of 15, but the four listed above are used by multiplying whole numbers.
Some of the best ways to teach children the use of flash cards, worksheets or using a multiplication table. If you want to make it more fun for them using online games is a great resource and there are songs that help children with multiplication as well by visiting school house rock.
There are infinitely many ways. Think of any number, say x. calculate y = 13 - x Then x + y = 13 Since the choice of x was arbitrary, there are infinitely many answers. That applies to pairs of numbers. You can repeat the process for sums of 3, 4, ... numbers. Also, you can look at multiplication and other ways of combining numbers (binary operations).
There are many ways to practice multiplication; 1. Conventional Method: This method is about learning the tables of numbers up to 9 and then using digit multiplication and summation to derive the answer. 2. Abacus: This is the ancient method which uses placements to derive multiplication. 3. Vedic Mathematics: This method provides alternative and easier way for all mathematical problems.