62.5 is the decimal point of 6. 25 is shifted one place to the right, and 6.25 is expanded to 10 times to get 62.5.
0.625 is the decimal point of 6.25, which is shifted one place to the left, 6. 25 is reduced to the original prime number to get 0. 625.
625 is the decimal point of 6. 25, moved two places to the right, the original 100 multiplied by 6. 25 zoom in to get 625.
0.0625 is the decimal point of 6. 25, moved two places to the left, and 6.25 was reduced to the original1100 to get 0.0625.
2、26.3 263 2630 4.5 45 450 38.9 389 3890 ?
3、43.5 0.435 43 8 0.8 8 670 6.7 0.67
4、483 0.483 4830 ÷ 10 ÷ 1000 × 100
5、
( 1)0.36
(2)3 14
(3) 1000
(4) 1/ 1000
6、
0.85× 100=85 (kg)
0.85× 1000=850 (kg)
7320÷ 1000 = 0.32 (kWh)
8. 6× 100=600 (g) 600 g = 0.6 kg
A year is calculated as 365 days.
6×365 = 2 190(g)2 190g = 2. 19kg
9、
Solution1:82.5 ÷100×10000 = 0.825×10000 = 8250 (pieces)
Scheme 2: 82.5× (10000 ÷100) = 82.5×100-8250 (pieces)
This part of the extended information mainly examines the application of decimals:
Decimal is a special form of real number. All fractions can be expressed as decimals, and the points in decimals are called decimal points, which are the dividing lines between the integer part and the decimal part of a decimal. Decimals with integer part zero are pure decimals, and decimals with integer part not zero are decimals.
Add or delete any zeros at the end of the decimal part, and the size of the decimal remains the same. For example: 0.4=0.400, 0.060=0.06.
Move the decimal point to the right (or left) by n bits respectively, and the value of the decimal point will be expanded (or reduced) by n times. (for example, for decimal).
There are infinitely many numbers in the decimal part, and the decimal with one or several numbers that do not appear repeatedly in turn is called infinite acyclic decimal, such as pi = 3.14159265358979323 ..., and the base of natural logarithm e = 2.71828182823. Infinitely cyclic decimals, that is, irrational numbers, cannot be converted into component forms.