1.次の計算をしなさい。
(1)\[(-13)×(-2)\]
\[+26\]
(2)\[(+4)×(-4)\]
\[-16\]
(3)\[(-6)×(+1.5)\]
\[-9\]
(4)\[(+7)×\left(+\frac{1}{3}\right)\]
\[+\frac{7}{3}\]
(5)\[3×\left(-\frac{1}{2}\right)×(-14)\]
\[+21\]
(6)\[(-5)^2×(-2^3)\]
\[-200\]
(7)\[(-21)÷(+7)\]
\[-3\]
(8)\[(-54)÷(-9)\]
\[+6\]
(9)\[3.6÷(-0.4)\]
\[-9\]
(10)\[\frac{4}{7}÷\left(-\frac{5}{2}\right)\]
\[-\frac{8}{35}\]
(11)\[(-3)×\frac{5}{12}÷(-5)\]
\[+\frac{1}{4}\]
(12)\[3÷15×(-5)^3\]
\[-25\]
(13)\[-13-(-2)×5\]
\[-3\]
(14)\[(-12)-(-18)÷\left(-\frac{2}{3}\right)\]
\[-39\]
(15)\[(-10)÷2-3×(-2)\]
\[+1\]
(16)\[-1-8÷4×(-5)\]
\[+9\]
(17)\[(-3)^2-7^2×(-2)\]
\[+107\]
(18)\[50÷\{(-6)+(-4)\}\]
\[-5\]
(19)\[(-9)×(-7)\]
\[+63\]
(20)\[(+5)×(-3)\]
\[-15\]
(21)\[(-1)×(+4)\]
\[-4\]
(22)\[(-17)×0\]
\[0\]
(23)\[\left(+\frac{2}{3}\right)×\left(+\frac{6}{7}\right)\]
\[+\frac{4}{7}\]
(24)\[(-1.8)×\left(+\frac{5}{3}\right)\]
\[-3\]
(25)\[(-24)÷(-6)\]
\[+4\]
(26)\[(+39)÷(-13)\]
\[-3\]
(27)\[0÷(-14)\]
\[0\]
(28)\[(-8)÷(+12)\]
\[-\frac{2}{3}\]
(29)\[(-5.6)÷(+0.7)\]
\[-8\]
(30)\[\left(-\frac{7}{9}\right)÷\left(+\frac{14}{3}\right)\]
\[-\frac{1}{6}\]
(31)\[(+7)×(-4)÷(-2)\]
\[+14\]
(32)\[-3÷6×(-12)\]
\[+6\]
(33)\[(-4)^3\]
\[-64\]
(34)\[(-8)×\frac{3}{2}×\left(-\frac{6}{5}\right)\]
\[+\frac{72}{5}\]
(35)\[(-2)^3×(-3)\]
\[+24\]
(36)\[18÷(-24)×\left(-\frac{4}{5}\right)\]
\[+\frac{3}{5}\]
(37)\[-6-(-2)×3\]
\[0\]
(38)\[12-8÷(-4)\]
\[+14\]
(39)\[4÷(-1)+(-2)×(-7)\]
\[+10\]
(40)\[-5^3×(-2)-15\]
\[+235\]
(41)\[\frac{9}{4}÷\left(-\frac{3}{2}\right)-\left(-\frac{3}{2}\right)\]
\[0\]
(42)\[-(-3)^2-\left(-\frac{2}{3}\right)×\frac{3}{4}\]
\[-\frac{17}{2}\]
(43)\[(+4)+(-9)\]
\[-5\]
(44)\[(-6)-(-2)\]
\[-4\]
(45)\[-8+12\]
\[+4\]
(46)\[-31-7\]
\[-38\]
(47)\[0-(-11)\]
\[+11\]
(48)\[-5+5\]
\[0\]
(49)\[6×(-4)\]
\[-24\]
(50)\[(-1.4)×(-5)\]
\[+7\]
(51)\[-18÷6\]
\[-3\]
(52)\[4.5÷(-0.9)\]
\[-5\]
(53)\[-4+1-(-5)\]
\[+2\]
(54)\[5-(-8)-7-10\]
\[-4\]
(55)\[-23-(+59)+23\]
\[-59\]
(56)\[-7+13-8+12\]
\[+10\]
(57)\[(-7)×(-2)×(-3)\]
\[-42\]
(58)\[(-24)÷(-4)÷(-2)\]
\[-3\]
(59)\[-12÷(-8)×2\]
\[+3\]
(60)\[-2^3×(-3)\]
\[+24\]
(61)\[-7-3×5\]
\[-22\]
(62)\[5+(-16)÷2\]
\[-3\]
(63)\[6×(-3)-(-7)×(-3)\]
\[-39\]
(64)\[(-5)×(-4)-8÷4\]
\[+18\]
(65)\[-\frac{5}{6}+\frac{1}{3}\]
\[-\frac{1}{2}\]
(66)\[(-12)×\frac{5}{6}\]
\[-10\]
(67)\[-5-\{-12-(-20)\}\]
\[-13\]
(68)\[9-6^2÷(-3^2)\]
\[+13\]
(69)\[\frac{2}{3}-\left(-\frac{1}{2}\right)^2÷\frac{3}{4}\]
\[+\frac{1}{3}\]
(70)\[\frac{4}{3}×\left(-\frac{2}{7}\right)-\frac{4}{7}÷\left(-\frac{3}{2}\right)\]
\[0\]
2.次の数を素因数分解しなさい。
(1)\[30\]
\[2×3×5\]
(2)\[98\]
\[2×7^2\]
(3)\[200\]
\[2^3×5^2\]
(4)\[240\]
\[2^4×3×5\]