Умножение десятичных дробей
При умножении десятичной дроби на натуральное число, мы должны:
1) перемножить числа, не обращая внимания на запятую;
2) в полученном произведении поставить запятую так, чтобы справа от нее было столько же цифр, сколько в десятичной дроби.
Примеры умножения десятичных дробей в столбик:
Умножение двух десятичных дробей выполняется так:
1) числа перемножаются без учета запятых.
2) запятая в произведении ставится так, чтобы отделить справа столько же знаков, сколько отделено в обоих множителях вместе взятых. Например:
1,1 * 0,2 = 0,22 ; 1,1 * 1,1 = 1,21 ; 2,2 * 0,1 = 0,22 .
Примеры умножения десятичных дробей в столбик:
Вопросы к конспектам
Решите уравнение: ![begin mathsize 12px style fraction numerator х over denominator 6 comma 2 end fraction equals 5 comma 25 end style](data:image/svg+xml;charset=utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20xmlns%3Awrs%3D%22http%3A%2F%2Fwww.wiris.com%2Fxml%2Fmathml-extension%22%20height%3D%2232%22%20width%3D%2262%22%20wrs%3Abaseline%3D%2220%22%3E%3C!--MathML%3A%20%3Cmath%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmstyle%20mathsize%3D%2212px%22%3E%3Cmfrac%20mathcolor%3D%22%23B94A48%22%3E%3Cmi%3E%26%23x445%3B%3C%2Fmi%3E%3Cmrow%3E%3Cmn%3E6%3C%2Fmn%3E%3Cmo%3E%2C%3C%2Fmo%3E%3Cmn%3E2%3C%2Fmn%3E%3C%2Fmrow%3E%3C%2Fmfrac%3E%3Cmo%20mathcolor%3D%22%23B94A48%22%3E%3D%3C%2Fmo%3E%3Cmn%20mathcolor%3D%22%23B94A48%22%3E5%3C%2Fmn%3E%3Cmo%20mathcolor%3D%22%23B94A48%22%3E%2C%3C%2Fmo%3E%3Cmn%20mathcolor%3D%22%23B94A48%22%3E25%3C%2Fmn%3E%3C%2Fmstyle%3E%3C%2Fmath%3E--%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%40font-face%7Bfont-family%3A'math1e080d427c4d377ecbc02e4482b'%3Bsrc%3Aurl(data%3Afont%2Ftruetype%3Bcharset%3Dutf-8%3Bbase64%2CAAEAAAAMAIAAAwBAT1MvMi7iBBMAAADMAAAATmNtYXDEvmKUAAABHAAAADxjdnQgDVUNBwAAAVgAAAA6Z2x5ZoPi2VsAAAGUAAAA3GhlYWQQC2qxAAACcAAAADZoaGVhCGsXSAAAAqgAAAAkaG10eE2rRkcAAALMAAAADGxvY2EAHTwYAAAC2AAAABBtYXhwBT0FPgAAAugAAAAgbmFtZaBxlY4AAAMIAAABn3Bvc3QB9wD6AAAEqAAAACBwcmVwa1uragAABMgAAAAUAAADSwGQAAUAAAQABAAAAAAABAAEAAAAAAAAAQEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAgICAAAAAg1UADev96AAAD6ACWAAAAAAACAAEAAQAAABQAAwABAAAAFAAEACgAAAAGAAQAAQACACwAPf%2F%2FAAAALAA9%2F%2F%2F%2F1f%2FFAAEAAAAAAAAAAAFUAywAgAEAAFYAKgJYAh4BDgEsAiwAWgGAAoAAoADUAIAAAAAAAAAAKwBVAIAAqwDVAQABKwAHAAAAAgBVAAADAAOrAAMABwAAMxEhESUhESFVAqv9qwIA%2FgADq%2FxVVQMAAAEAVf9kANUAgAAKAAAzNTMVFAYHJz4BN1WALy8bHh4BgHo9URQpDjQxAAIAgADrAtUCFQADAAcAZRgBsAgQsAbUsAYQsAXUsAgQsAHUsAEQsADUsAYQsAc8sAUQsAQ8sAEQsAI8sAAQsAM8ALAIELAG1LAGELAH1LAHELAB1LABELAC1LAGELAFPLAHELAEPLABELAAPLACELADPDEwEyE1IR0BITWAAlX9qwJVAcBV1VVVAAEAAAABAADVeM5BXw889QADBAD%2F%2F%2F%2F%2F1joTc%2F%2F%2F%2F%2F%2FWOhNzAAD%2FIASAA6sAAAAKAAIAAQAAAAAAAQAAA%2Bj%2FagAAF3AAAP%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%2BgAAAAAAAAAAAAAAAAAAAAAAAAAAuQcRAACNhRgAsgAAABUUE7EAAT8%3D)format('truetype')%3Bfont-weight%3Anormal%3Bfont-style%3Anormal%3B%7D%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cline%20stroke%3D%22%23B94A48%22%20stroke-linecap%3D%22square%22%20stroke-width%3D%221%22%20x1%3D%221.5%22%20x2%3D%2222.5%22%20y1%3D%2215.5%22%20y2%3D%2215.5%22%2F%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2212.5%22%20y%3D%2211%22%3E%26%23x445%3B%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%226.5%22%20y%3D%2228%22%3E6%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22math1e080d427c4d377ecbc02e4482b%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2212.5%22%20y%3D%2228%22%3E%2C%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2217.5%22%20y%3D%2228%22%3E2%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22math1e080d427c4d377ecbc02e4482b%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2230.5%22%20y%3D%2220%22%3E%3D%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2239.5%22%20y%3D%2220%22%3E5%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22math1e080d427c4d377ecbc02e4482b%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2245.5%22%20y%3D%2220%22%3E%2C%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2253.5%22%20y%3D%2220%22%3E25%3C%2Ftext%3E%3C%2Fsvg%3E)
Выполните умножение: (5 * 3,16) * 4
Вычислите: 0,25 * 1,32
Последнее изменение: Среда, 8 Март 2017, 00:22