25x24 easy way? 24x25 is calculated in an easy way

25x24, if this problem is calculated in a simple way, we first need to decompose 24 into 4 6, and then substitute this formula into the original formula, that is, 25 4 6, we can calculate 25 4 = 100, and then use 100 6 = 600, so that we can quickly calculate that the answer to this problem is 600.

When you see 25, you try to find its fixed combination of 25*4 and convert the equation to 25*4*6=100*6=600.

There are several ways, if you remember the square of 24 or 25, you can use 25*24=24*24+24=576+24=600;or 25*24=25*25-25=625-25=600. Another method is to use 25*4=100, 25*24=25*4*6=100*6=600.

There are 25 in the multiplication equation, and the general idea is to use 25 4=100.

So 25 4 6 is equal to 100 6 is equal to 600.

The easy way to 25 24 is, of course, to split 24 into 20 + 4, first calculate 25 20 = 500, add 25 4 = 100, the result is 500 + 100, which is equal to 600

24 25 The simple method of calculating the process is as follows: 24 25=(4 6) 25=(4 25) 6=100 6=600.

Usually, in simple calculations.

In addition to using such as: multiplicative commutative law, multiplicative associative law.

Families of laws of operations such as the commutative law of addition, and special number formulas such as 16=10000 can be used to make the operation easier. In the simple operation of 24 25, not only the multiplicative associative law of the base ear jujube is used, but also the special number formula of 25 4 = 100 is used.

Analysis of the process of clever calculations 25 24

Solution: Four operation rules (calculated in order, multiplication and division first, then plus and subtraction, parentheses are counted first, and multiplication is allowed to be calculated first), that is, the off-form operation (recursive equation calculation) needs to be carried out under the premise of this principle. Problem solving process:

Extended data = > vertical calculation: first align the last digit of the two multipliers, then use the second multiplier respectively, multiply a multiplier for each digit from the last digit in turn, and finally add up the calculated result as the product, if the multiplier is a decimal place, you can first expand it by the corresponding multiple, and finally the product is shrinking the corresponding multiple;

Problem solving: Step 1: 4 25=100

Step 2: 2 25 = 500

Based on the above calculations, the sum is 600

=25x4x6100x6

That's the easy way to do it.

24×25

It is easiest to split 24 into 4 6 first, and then use the multiplicative associative law.

The core of simple operation is to use the laws of addition and multiplication to calculate, and calculate the integer part to facilitate the subsequent calculation. Problem solving process:

Absolutely, it's easy.

When you see 25, you should think of four, because 25 multiplied by four equals 100

There is no easy way to do this. It is directly supported to multiply these two numbers at once according to the algorithm of multiplication to obtain such a result.

Because the state returns to the forest without 25x4=100, you can divide the book spring hunger 24 into 4x6, and then simply calculate:

25x24=25x4x6=100x6=600

Equal to 24 times parenthesis 25 4 parentheses equal to 24 100 = 2400