// Numbas version: finer_feedback_settings
{"name": "Simon's copy of Decimal to Binary 1", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"variablesTest": {"condition": "", "maxRuns": 100}, "preamble": {"css": "", "js": ""}, "tags": ["rebelmaths"], "extensions": [], "advice": "<p>Repeatedly divide the given decimal number by 2, writing the remainder clearly on the right hand side (even if the remainder is 0).</p>\n<p>Continue until you eventually reach 1, at which point you get 1/2 = 0, with remainder 1. Now list the remainders in the order from bottom to top.</p>\n<p></p>\n<p>For example, to convert 363 to decimal:</p>\n<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Number of times 2 goes in: &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Remainder:</p>\n<p>363/2 = 181 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1</p>\n<p>181/2 = 90 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1</p>\n<p>90/2 &nbsp; = 45 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0</p>\n<p>45/2 &nbsp; = 22 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1</p>\n<p>22/2 &nbsp; = 11 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0</p>\n<p>11/2 &nbsp; = 5 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1</p>\n<p>5/2 &nbsp; &nbsp; = 2 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1</p>\n<p>2/2 &nbsp; &nbsp; = 1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0</p>\n<p>1/2 &nbsp; &nbsp; = 0 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1</p>\n<p></p>\n<p>We can go no further, so&nbsp;we stop. Now, listing the remainders in order from bottom to top, we get that 363, in binary, is 101101011.</p>", "variables": {"a": {"definition": "random(1..10000#1)", "name": "a", "templateType": "randrange", "group": "Ungrouped variables", "description": ""}}, "statement": "<p>Convert the number 519&nbsp;to binary.</p>", "type": "question", "ungrouped_variables": ["a"], "parts": [{"variableReplacements": [], "displayColumns": 0, "displayType": "radiogroup", "maxMarks": 0, "variableReplacementStrategy": "originalfirst", "type": "1_n_2", "scripts": {}, "minMarks": 0, "marks": 0, "distractors": ["", "", "", ""], "shuffleChoices": true, "choices": ["<p>0010 0000 0111</p>", "<p>0001 0010 0111</p>", "<p>0000 1110 0010</p>", "<p>1000 0110 0101</p>"], "showCorrectAnswer": true, "matrix": ["2", 0, 0, 0]}], "metadata": {"description": "<p>rebelmaths</p>\n<p>Converting a decimal number to binary.</p>", "licence": "Creative Commons Attribution 4.0 International"}, "rulesets": {}, "variable_groups": [], "name": "Simon's copy of Decimal to Binary 1", "question_groups": [{"name": "", "pickQuestions": 0, "questions": [], "pickingStrategy": "all-ordered"}], "showQuestionGroupNames": false, "functions": {}, "contributors": [{"name": "Clodagh Carroll", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/384/"}, {"name": "Simon Thomas", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/3148/"}], "resources": []}]}], "contributors": [{"name": "Clodagh Carroll", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/384/"}, {"name": "Simon Thomas", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/3148/"}]}