// Numbas version: finer_feedback_settings
{"name": "Multiplication of 2-digit numbers", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"name": "Multiplication of 2-digit numbers", "tags": [], "metadata": {"description": "<p>quick multiplication</p>", "licence": "Creative Commons Attribution-NonCommercial 4.0 International"}, "statement": "<p>Find the product of</p>", "advice": "<ul>\n<li>Place numbers directly under each other eg</li>\n</ul>\n<p>a b &nbsp; &nbsp; &nbsp; &nbsp; 1 <strong>7</strong></p>\n<p>c d &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;4 <strong>2</strong></p>\n<ul>\n<li>Multiply last column (bxd) and put the amount to the right side</li>\n</ul>\n<p>7 x 2 = 14</p>\n<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 14</p>\n<ul>\n<li>Multiply (axd) 1x2 = 2</li>\n</ul>\n<p>Place answer infront of the last answer. &nbsp;Add it to any digit that is there already</p>\n<p>&nbsp; &nbsp; &nbsp; &nbsp; (2+1) 4</p>\n<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 3 &nbsp; &nbsp;4</p>\n<ul>\n<li>Multiply (bxc) 7x4 = 28</li>\n</ul>\n<p>Place answer in front of last digit of existing answer, adding it to any digits already there</p>\n<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(28 + 3) &nbsp;4</p>\n<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 31 &nbsp; &nbsp;4</p>\n<ul>\n<li>Multiply (axc) 1x4 = 4</li>\n</ul>\n<p>Add to the first digit of number in front of answer</p>\n<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(4 + 3) &nbsp;1 &nbsp;4</p>\n<p>&nbsp;ANSWER =&nbsp;7 1 4</p>", "rulesets": {}, "extensions": [], "variables": {"a": {"name": "a", "group": "Ungrouped variables", "definition": "random(10 .. 99#1)", "description": "<p>any 2-digit number</p>", "templateType": "randrange"}, "b": {"name": "b", "group": "Ungrouped variables", "definition": "random(10 .. 99#1)", "description": "<p>any 2-digit number</p>", "templateType": "randrange"}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["a", "b"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "numberentry", "useCustomName": false, "customName": "", "marks": "5", "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>{a} * {b}</p>", "minValue": "a*b", "maxValue": "a*b", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "showFractionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always", "type": "question", "contributors": [{"name": "Maureen Clement", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/10374/"}]}]}], "contributors": [{"name": "Maureen Clement", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/10374/"}]}