Pembahasan Soal Buku Paket Matematika SMP Kelas 7 Halaman 35 (Kurikulum Merdeka)
Hai sobat semuanya, pada postingan kali ini mimin akan sajikan pembahasan beberapa soal buku paket matematika SMP kelas 7 halaman 35 (kurikulum merdeka). Selamat belajar. Semoga bermanfaat.
Soal nomor 1 (Penjumlahan)
$ \begin{aligned} &(1). (+11) + (+4) = \color{red}{+15}\\ \\ &(2). (-6) + (-12) = \color{red}{-18}\\ \\ &(3). (+8) + (-1) = \color{red}{+7}\\ \\ &(4). (+3) + (-10)=\color{red}{-7}\\ \\ &(5). (+16) + (-16)=\color{red}{0}\\ \\ &(6). (-7) + (+2)= \color{red}{-5}\\ \\ &(7). (-9) + (+13)= \color{red}{+4}\\ \\ &(8). (+0,6) + (-1,8)=\color{red}{-1,2}\\ \\ &(9). (-2,7) + (-3,5)= \color{red}{-6,2}\\ \\ &(10). (-\frac{1}{3})+(+\frac{1}{2})= \color{red}{+\frac{1}{6}}\\ \\ &(11). (-\frac{3}{4})+(-\frac{5}{12})= \color{red}{-\frac{7}{6}} \end{aligned}$
Soal nomor 2 (Pengurangan)
$ \begin{aligned} (1). &(+8) – (+4) \\ &= (+8) + (-4) \\ &= \color{red}{+4}\\ \\ (2). &(+3) – (+9)\\ &= (+3) + (-9)\\ &= \color{red}{-6}\\ \\ (3). &(+5) – (-2) \\ &= (+5) + (+2)\\ &= \color{red}{+7}\\ \\ (4). &0 – (-13)\\ &= 0 + (+13)\\ &= \color{red}{+13}\\ \\ (5). &(-7) – (+2)\\ &= (-7) + (-2)\\ &= \color{red}{-9}\\ \\ (6). &(-9) – (-1)\\ &= (-9) + (+1)\\ &= \color{red}{-8}\\ \\ (7). &(-2) – (-15)\\ &= (-2) + (+15)\\ &= \color{red}{+13}\\ \\ (8). &(-1,9) – (+1,4)\\ &= (-1,9) + (-1,4)\\ &= \color{red}{-3,3}\\ \\ (9). & (+\frac{1}{6}) - (-\frac{1}{2})\\ &= (+\frac{1}{6}) + (+\frac{1}{2})\\ &= \color{red}{+\frac{2}{3}}\\ \\ (10). &(-\frac{2}{7}) - (+\frac{5}{14})\\ &= (-\frac{2}{7}) + (-\frac{5}{14})\\ &= \color{red}{-\frac{9}{14}} \end{aligned}$
Soal nomor 3 (Hitungan Penjumlahan dan Pengurangan)
$ \begin{aligned} (1). & (-3) + (+2) – (+5)\\ &= -3+2-5\\ &= -3-5+2\\ &= -8+2\\ &= \color{red}{-6}\\ \\ (2). & (+6) – (-7) + (-13)\\ &= 6+7-13\\ &= 13-13\\ &=\color{red}{0}\\ \\ (3).& (-6) – (+1) + (-3) – (-8)\\&=-6-1-3+8\\ &=-10+8\\ &=\color{red}{-2}\\ \\ (4). &3 – 8\\&=\color{red}{-5}\\ \\ (5).& -6 + 9\\&= \color{red}{3} \\ \\ (6).&-7 – 4\\&=\color{red}{-11}\\ \\ (7).&-18 + 18\\ &= \color{red}{0}\\ \\ (8).& 5 – 19\\&= \color{red}{-14}\\ \\ (9).& -2 + 6 – 8\\&= -2 – 8 +6\\ &=-10+6\\ &=\color{red}{-4}\\ \\ (10).& 7 – 9 – 5\\ &=7-14\\&= \color{red}{-7}\\ \\ (11). & 4 – 7 + 10 – 1\\&= 4 + 10 -7 – 1\\ &=14-8\\ &=\color{red}{6}\\ \\ (12).& -12 + 4 – 3 + 7\\&= -12 – 3+4 + 7\\ &= -15+11\\ &=\color{red}{-4} \\ \\ (13).& 0,4 – 1,9\\&= \color{red}{-1,5}\\ \\ (14).& -1,3 + 2,7\\&= \color{red}{1,4}\\ \\ (15).& (-\frac{2}{5})-(\frac{3}{5})\\&= -\frac{2}{5}-\frac{3}{5}\\&=\frac{-5}{5}\\&=\color{red}{-1}\\ \\ (16).& (\frac{4}{9})-(\frac{5}{6})\\&= \frac{4}{9}-\frac{5}{6}\\&= \frac{8}{18}-\frac{15}{18}\\&=\color{red}{-\frac{7}{18}}\\ \\ (17).& -2 + (-10) – 6\\&=-2-10-6\\&=\color{red}{-18}\\ \\ (18).& 13 + (-2) – 5 – (-7)\\&= 13-2-5+7\\&= 13+7-2-5\\&=20-7\\&= \color{red}{13}\\ \\ (19).& -7 – (+8) – (-3) + 9\\&=-7-8+3+9\\ &= -15+12 \\&= \color{red}{-3}\\ \\ (20).& 1 + (-0,6) – 0,8\\&= 1 -0,6 – 0,8\\&=1-1,4\\ &\color{red}{-0,4}\\ \\ (21).& (-\frac{1}{3})+(\frac{1}{6})-(-\frac{2}{3})\\&= -\frac{1}{3}+\frac{1}{6}+\frac{2}{3}\\&= -\frac{2}{6}+\frac{1}{6}+\frac{4}{6}\\ &= -\frac{2}{6}+\frac{5}{6}\\ &= \frac{3}{6}\\ &= \color{red}{\frac{1}{2}} \end{aligned}$
Demikianlah pembahasan beberapa soal buku paket matematika SMP kelas 7 halaman 35 (kurikulum merdeka). Semoga bermanfaat.
Referensi
Tim Gakko Tosho. 2021. Matematika untuk Sekolah Menengah Pertama Kelas VII. Jakarta: Kementerian Pendidikan, Kebudayaan, Riset, dan Teknologi.
){kind=link}