Toán lớp 3 - sách cũ - Đề kiểm tra 45 phút - Toán lớp 3 - Tháng 1 - Số 2

{"save":1,"level":1,"time":"45","total":20,"point":5,"segment":[{"id":"1088","test_id":"291","question":"<p>472 - 157 + 216 =&nbsp;&lt;input class=\"tim_x input_number\" size=\"1\" tpl=\"dien_so\" type=\"text\" \/&gt;&lt;\/p>","options":"","correct":["531"],"answer":"<p>Trong bi\u1ec3u th\u1ee9c ch\u1ec9 c&oacute; ph&eacute;p t&iacute;nh c\u1ed9ng,&nbsp;ph&eacute;p t&iacute;nh tr\u1eeb th&igrave; ta th\u1ef1c hi\u1ec7n c&aacute;c ph&eacute;p t&iacute;nh theo th\u1ee9 t\u1ef1 t\u1eeb tr&aacute;i sang ph\u1ea3i.<\/p><p>Ta c&oacute;:<\/p><p>&nbsp;472 - 157 + 216&nbsp;<\/p><p>=&nbsp; &nbsp; &nbsp; 315&nbsp; &nbsp; + 216<\/p><p>= 531<\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;: <strong>531<\/strong><\/p>","type":"blank","user_id":"82","test":"0","date":"2020-03-28 15:26:25"},{"id":"1089","test_id":"291","question":"<p>54 : 9 x 7 =&nbsp;&lt;input class=\"tim_x input_number\" size=\"1\" tpl=\"dien_so\" type=\"text\" \/&gt;&lt;\/p>","options":"","correct":["42"],"answer":"<p>Trong bi\u1ec3u th\u1ee9c ch\u1ec9 c&oacute;&nbsp;c&aacute;c ph&eacute;p t&iacute;nh nh&acirc;n, ph&eacute;p t&iacute;nh chia th&igrave; ta th\u1ef1c hi\u1ec7n c&aacute;c ph&eacute;p t&iacute;nh theo th\u1ee9 t\u1ef1 t\u1eeb tr&aacute;i sang ph\u1ea3i.<\/p><p>Ta c&oacute;:<\/p><p>&nbsp;54 : 9 x 7&nbsp;<\/p><p>=&nbsp; &nbsp;6&nbsp; &nbsp; x 7&nbsp;<\/p><p>= 42<\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;:<strong> 42<\/strong><\/p>","type":"blank","user_id":"82","test":"2","date":"2020-03-28 15:31:56"}]}