Calculate the formula according to the meaning of the question:
24000x25%
=24000x25x0.0 1
=240x25
=(200+40)x25
=200x25+40x25
=5000+ 1000
=6000
So there are 6000 medical books.
Exchange of percentages and decimals:
(1) Decimal system: Delete the percent sign and move the decimal point to the left by two places. For example, 75% can be converted into 0.75.
(2) Decimal percentage: add a percent sign and move the decimal point to the right by two places. For example, 0.62 can be converted into 62%.
Decimal addition and subtraction calculation, decimal point alignment (that is, same digit alignment); Calculate according to the law of integer addition and subtraction; Align the decimal point with the horizontal line in the number and point to the decimal point.