(0) Write 70.304 million (), rewrite the number () with "ten thousand" as the unit, and the mantissa after omitting "ten thousand" is ().

(1) The number composed of five 1,161100 is ().

(2) According to the results of the fifth national census, the total population of the whole country is1295.33 million, which is recorded as (), rounded to several hundred million or so ().

(3)0.375 is pronounced as (), and its counting unit is ().

(4) The investment of Fuhe Bridge is about 362.5 million yuan, and the figure is rewritten as "100 million" which is () billion.

(5) Compared with the divisor of 50,000, the exact number of 50,000 is at most different in ten thousand ().

(6) The decimal consisting of three hundred, six ones, seven tenths and eight ten thousandths is (), and the two decimal places are about ().

Other contents:

1, sum and difference problem

Given the sum and difference of two numbers, find these two numbers.

Formula: sum plus difference, the bigger it becomes; Divided by 2, it is big; And subtract the difference, the smaller the reduction; Divided by 2, it is small.

2. Difference ratio problem

Formula: I am more than you, and multiple is cause and effect. Actual difference of numerator, multiple difference of denominator. Double the quotient and multiply it by their respective multiples to get two numbers.

3. Age problem

Formula: the age difference is constant, and it is added and subtracted at the same time. With the change of age, the multiple is also changing. Grasp these three points and everything will be easy.