(1)1010,000 is 100,000,1010,000 is 1 million,1010 million is 10 million,1010 million is 100 million. (Another way of saying it: there are1010,000 miles,1010,000 miles in a thousand miles,1010,000 miles in Wan Li, and1010,000 miles in a hundred thousand miles).

(2) Number of digits: single digit, ten digit, hundred digit, thousand digit, .............

Ten thousand, one hundred thousand, one million, ten million, ... ten thousand.

Billions, billions, billions, billions ... billions.

(3) Counting units: one (1), ten, one hundred, one thousand, ten thousand, one hundred thousand, one million, ten million, one billion, one billion and one hundred billion.

(4) The forward speed between every two adjacent counting units is 10. This counting method is called decimal counting method.

(5) Rewrite it into a number with "ten thousand" as the unit: remove the four zeros at the end and add a "ten thousand".

meaning

The first volume of mathematics in the fourth grade of primary school mainly studies large numbers within 100 million, knows the size of hectares and square kilometers, measures angles, knows parallelogram and trapezoid, calculates three digits multiplied by two digits, calculates the division of divisor with two digits, and draws simple statistical charts.

Understand that 100 million is the unit of counting,100000 is one million,100001 is ten million, and1010 million is one hundred million. Every four digits are one level, and the series between every two adjacent digits is 10. As long as you can fill in the following numerical sequence table accurately and answer three small questions correctly, it means that you have mastered the point of 1.