Làm quen với chữ số la mã
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</div><p></p> <p>•&nbsp;<strong>Một số chữ số La Mã thường dùng:</strong></p> <p style="padding-left: 40px;"><strong><span style="font-family: 'times new roman', times, serif;">I</span></strong>: một&nbsp; ;&nbsp; <strong><span style="font-family: 'times new roman', times, serif;">V</span></strong>: năm&nbsp; ;&nbsp; <strong><span style="font-family: 'times new roman', times, serif;">X</span></strong>: mười</p> <p>•&nbsp;<strong>Các số La Mã từ 1 đến 20:</strong></p> <table style="border-collapse: collapse; width: 100.052%;" border="1"> <tbody> <tr> <td style="width: 10.0002%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">I</span></td> <td style="width: 10.0002%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">II</span></td> <td style="width: 10.0002%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">III</span></td> <td style="width: 10.0002%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">IV</span></td> <td style="width: 10.0002%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">V</span></td> <td style="width: 10.0002%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">VI</span></td> <td style="width: 10.0002%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">VII</span></td> <td style="width: 10.0002%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">VIII</span></td> <td style="width: 10.0002%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">IX</span></td> <td style="width: 10.0002%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">X</span></td> </tr> <tr> <td style="width: 10.0002%; text-align: center;">1</td> <td style="width: 10.0002%; text-align: center;">2</td> <td style="width: 10.0002%; text-align: center;">3</td> <td style="width: 10.0002%; text-align: center;">4</td> <td style="width: 10.0002%; text-align: center;">5</td> <td style="width: 10.0002%; text-align: center;">6</td> <td style="width: 10.0002%; text-align: center;">7</td> <td style="width: 10.0002%; text-align: center;">8</td> <td style="width: 10.0002%; text-align: center;">9</td> <td style="width: 10.0002%; text-align: center;">10</td> </tr> </tbody> </table> <p>&nbsp;</p> <table style="border-collapse: collapse; width: 100.052%;" border="1"> <tbody> <tr> <td style="width: 7.82632%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">XI</span></td> <td style="width: 7.82632%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">XII</span></td> <td style="width: 7.82632%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">XIII</span></td> <td style="width: 7.82632%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">XIV</span></td> <td style="width: 7.82632%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">XV</span></td> <td style="width: 7.82632%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">XVI</span></td> <td style="width: 7.82632%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">XVII</span></td> <td style="width: 7.82632%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">XVIII</span></td> <td style="width: 7.82632%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">XIX</span></td> <td style="width: 7.83931%; text-align: center;"><span style="font-family: 'times new roman', times, serif;">XX</span></td> </tr> <tr> <td style="width: 7.82632%; text-align: center;">11</td> <td style="width: 7.82632%; text-align: center;">12</td> <td style="width: 7.82632%; text-align: center;">13</td> <td style="width: 7.82632%; text-align: center;">14</td> <td style="width: 7.82632%; text-align: center;">15</td> <td style="width: 7.82632%; text-align: center;">16</td> <td style="width: 7.82632%; text-align: center;">17</td> <td style="width: 7.82632%; text-align: center;">18</td> <td style="width: 7.82632%; text-align: center;">19</td> <td style="width: 7.83931%; text-align: center;">20</td> </tr> </tbody> </table> <h3 id="1-doc-so">1. Đọc số.</h3> <p><span style="font-family: 'times new roman', times, serif;">I, V, X</span></p> <p><span style="font-family: 'times new roman', times, serif;">I, II, III</span></p> <p><span style="font-family: 'times new roman', times, serif;">IV, V, VI, VII, VIII</span></p> <p><span style="font-family: 'times new roman', times, serif;">IX, X, XI, XII, XIII</span></p> <p><span style="font-family: 'times new roman', times, serif;">XIV, XV, XVI, XVII, XVIII</span></p> <p><span style="font-family: 'times new roman', times, serif;">XIX, XX</span></p> <h3 id="2-xoay-kim-dong-ho-de-dong-ho-chi">2. Xoay kim đồng hồ để đồng hồ chỉ:</h3> <p><span style="color: #3598db;">Mẫu: 11 giờ</span></p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b22-h2-1666426992.jpg.webp" width="121" height="119" alt="hinh-anh-lam-quen-voi-chu-so-la-ma-1787-1" title="hinh-anh-lam-quen-voi-chu-so-la-ma-1787-1" loading="lazy"></p> <p>a) 4 giờ</p> <p>b) 8 giờ</p> <p>c) 7 giờ</p> <p>d) 12 giờ</p> <h3 id="bagravei-tap-1nbsp">Bài tập 1:&nbsp;</h3> <p><strong>Viết các số sau bằng chữ số La Mã.</strong></p> <p>a) 1, 5, 10</p> <p>b) 2, 3, 11, 12, 13</p> <p>c) 4, 6, 24, 16</p> <p>d) 7, 8, 9, 15, 17, 18, 19, 20</p> <p><strong>Vui học</strong></p> <p>Đọc nội dung trong hai hình bên.</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b22-h3-1666427185.jpg.webp" width="204" height="102" alt="hinh-anh-lam-quen-voi-chu-so-la-ma-1787-2" title="hinh-anh-lam-quen-voi-chu-so-la-ma-1787-2" loading="lazy"></p>