【中学1年数学】1-2 加法と減法｜問題集
1.次の計算をしなさい。
(1)\((+3)+(+9)\)
\(+12\)
(2)\((-5)+(-7)\)
\(-12\)
(3)\((+8)+(-4)\)
\(+4\)
(4)\((-12)+(+6)\)
\(-6\)
(5)\((+6)+0\)
\(+6\)
(6)\((-6.3)+(+3.3)\)
\(-3\)
(7)\((-3.4)+(+1.8)\)
\(-1.6\)
(8)\((+4.6)+(-4.6)\)
\(0\)
(9)\(\displaystyle \left(+\frac{4}{5}\right)+\left(-\frac{2}{5}\right)\)
\(\displaystyle +\frac{2}{5}\)
(10)\((-4)+(+9)+(-16)\)
\(-11\)
(11)\((+7)+(-6)+(+10)+(-5)\)
\(+6\)
(12)\((-10)+(+13)+(+17)+(-20)\)
\(0\)
(13)\((-9)+(+5)\)
\(-4\)
(14)\((+2)+(+6)\)
\(+8\)
(15)\((-1.5)+(-3)\)
\(-4.5\)
(16)\(\displaystyle \left(+\frac{1}{3}\right)+\left(-\frac{3}{4}\right)\)
\(\displaystyle -\frac{5}{12}\)
(17)\((-15)+0\)
\(-15\)
(18)\((+4)+(-2)+(-13)\)
\(-11\)
(19)\((+9)-(+2)\)
\(+7\)
(20)\((+4)-(-5)\)
\(+9\)
(21)\((-4)-(+11)\)
\(-15\)
(22)\((-1)-(-7)\)
\(+6\)
(23)\(0-(+9)\)
\(-9\)
(24)\((-6)-(-6)\)
\(0\)
(25)\((-13)-(+27)\)
\(-40\)
(26)\((+14)-(+18)\)
\(-4\)
(27)\((-16)-(-20)\)
\(+4\)
(28)\((+7)-(-15)\)
\(+22\)
(29)\((-15)-0\)
\(-15\)
(30)\((+7.2)-(-3.5)\)
\(+10.7\)
(31)\((-2.3)-(-2.3)\)
\(0\)
(32)\(\displaystyle \left(-\frac{2}{3}\right)-\left(-\frac{5}{6}\right)\)
\(\displaystyle +\frac{1}{6}\)
(33)\(-7+3-6\)
\(-10\)
(34)\(-8+5\)
\(-3\)
(35)\(6-8+7\)
\(+5\)
(36)\(-2+9-10\)
\(-3\)
(37)\(-11-4-1\)
\(-16\)
(38)\(7+(-13)-(-6)\)
\(0\)
(39)\(-5-(-7)+8\)
\(+10\)
(40)\(20-(-3)-2+(-7)\)
\(+14\)
(41)\(-27-(-5)-(+7)-10\)
\(-39\)
(42)\((+3)+(+15)\)
\(+18\)
(43)\((+9)+(-4)\)
\(+5\)
(44)\((+6)+(-12)\)
\(-6\)
(45)\((-7)+(-8)\)
\(-15\)
(46)\((-16)+(+16)\)
\(0\)
(47)\(0+(-12)\)
\(-12\)
(48)\((-1.3)+(+4.6)\)
\(+3.3\)
(49)\(\displaystyle \left(-\frac{2}{7}\right)+\left(-\frac{9}{7}\right)\)
\(\displaystyle -\frac{11}{7}\)
(50)\((+2)-(-6)\)
\(+8\)
(51)\((-3)-(-8)\)
\(+5\)
(52)\((+4)-(+15)\)
\(-11\)
(53)\((-5)-(+7)\)
\(-12\)
(54)\((-14)-(-14)\)
\(0\)
(55)\(0-(-9)\)
\(+9\)
(56)\((+0.6)-(-4.2)\)
\(+4.8\)
(57)\(\displaystyle \left(+\frac{2}{3}\right)-\left(-\frac{2}{9}\right)\)
\(\displaystyle +\frac{8}{9}\)
(58)\((+8)-(+3)+(-10)\)
\(-5\)
(59)\((-2)-(-4)-(+6)\)
\(-4\)
(60)\(7-9-12\)
\(-14\)
(61)\(-8+11-1+9\)
\(+11\)
(62)\(11-(-3)+5-4\)
\(+15\)
(63)\(-9-2+6+(-2)\)
\(-7\)
(64)\(-1.3+0.9-(-8.1)+1\)
\(8.7\)
(65)\(\displaystyle -\frac{3}{2}-\frac{1}{2}-\left(-\frac{2}{3}\right)+\frac{5}{3}\)
\(\displaystyle +\frac{1}{3}\)
次の学習に進もう！