Compatible number
there are no perfect numbers instead there are perfect cubes, perfect squares, natural numbers, whole numbers, integers, rational numbers, irrational numbers, and real numbers. If you want natural no. they are 21, 22, 23, 24, 25, 26, 27, 28, and 29.
No, the ratio of two natural numbers can be positive, negative, or zero depending on the numbers being divided.
Any numbers that can be written as the product of some number with itself e.g.: 1 = 1*1 4 = 2*2 9 = 3*3 16 = 4*4 100 = 10 * 10 There are an infinite number of square numbers so you can't expect a comprehensive list.
how to easy in tally
To remember the 3 times table, you can practice it regularly through repetition, use flashcards or mnemonic devices, and try to understand the patterns and relationships within the numbers. It can also be helpful to visualize groups of threes or draw a multiplication chart to reinforce the multiplication facts.
benchmark numbers
It depends on your computational skills.
Numbers that are easy to compute mentally are often referred to as "friendly numbers" or "nice numbers." These typically include whole numbers, simple fractions, and numbers that are easy to manipulate, such as those that are multiples of 10 or 100. They tend to have straightforward relationships, making calculations like addition, subtraction, multiplication, and division simpler to perform without a calculator.
The term that describes numbers that are easy to compute mentally is "round numbers." Round numbers are whole numbers that end in zero or five, making them simpler to work with in mental calculations. These numbers are often used in estimation and quick arithmetic tasks due to their ease of manipulation.
No.
Compatible Numbers numbers that are easy to compute mentally are called
Your brain, of course.
No, but if you practice you can learn to do it and it gets easier. Start of by learning (by rote) your times tables and when adding up do so in 10s.
easy to divide mentally
Compatible numbers can easily be divided mentally.
The patterns and properties to compute mentally 120 times 30 is the numbers 12 and 3 plus the two 0. Multiply 12 by 3 (36) and add the two 0 (3600).
Break it up into two separate problems. First 4X25=100, which is easy enough. Then 27X100=2700.