Elementary school math comparison size, math size comparison?

Elementary School Mathematics. Ways to compare sizes:

1. The integer is relatively large, and the number with more digits is larger; The number of digits is the same, and the number of the highest digits is larger; The top is the same, look at the next place.

2. The decimal is relatively large, and the large number of integer parts is large; The integer part is the same, and the highest digit of the decimal part is larger; The top is the same, look at the next place.

3. The fraction is relatively large, and the number with the largest molecule is larger.

Comparing size is one of the required knowledge points in primary school mathematics, and it is common in primary school to compare the size of single digits, multiple digits to size, decimal to size, fraction to size, etc. The decimal teacher has sorted out some of the commonly used formulas and methods for comparing sizes in primary school, hoping to help you.

Multi-digit size comparison.

The number of digits is different than the size, the number of bits is large, and the number of bits is small.

The number of digits is the same as the size, and the high digits are known by the ratio.

Comparison of decimal sizes.

The size of the decimal depends on the high position, and the large integer is the big number.

If the integer is the same, the tenths are larger, the tenths are the same, the percentiles are the same, and the percentiles are larger.

Primary school mathematics is not simple, that is, look at these two numbers by yourself, which number is bigger? Which number is smaller? You can see it at once.

Primary school mathematics is relatively simple, and parents need to explain it clearly to their children.

There are generally two ways to compare:

One. Difference comparison method If a-b>0, then a>b;

If a-b=0, then a=b;

If a-b<0, then a1 (a>0, b>0 ), then a>b;

If a b=1 (b does not equal 0), then a=b;

If a b<1 (a>0, b>0 ), then a

It's easy to compare when it's all decimals:

According to the base swap formula, all three logarithms are swapped into.

The form of the quotient of logarithms, and then according to the fraction, the way of comparing the size, to judge the large and small.

Elementary school mathematics is big, college mathematics is small, middle school mathematics is not big or small, you must learn it well!

A is the largest, the last number is second, the middle number is the smallest, and you can use the difference method to get the result.

The first, the second, the third.

The answer is the order in the question.

1.Less than, less than, greater than, greater than, greater than. When n is less than or equal to 2, n 1 power is less than (n 1) n power; When n is greater than 2, n to the power of 1 is greater than (n 1) to the n power. Greater than.