// Numbas version: exam_results_page_options
{"name": "Ioannis's copy of Using your Calculator Effectively", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"variables": {"c": {"templateType": "anything", "group": "Ungrouped variables", "description": "", "name": "c", "definition": "random(4..24#0.1)"}, "a": {"templateType": "anything", "group": "Ungrouped variables", "description": "", "name": "a", "definition": "random(-5..9#0.1 except 0)"}, "b": {"templateType": "anything", "group": "Ungrouped variables", "description": "", "name": "b", "definition": "random(-15..-8#0.1 except -a)"}}, "ungrouped_variables": ["a", "c", "b"], "rulesets": {}, "parts": [{"sortAnswers": false, "variableReplacements": [], "prompt": "<p>$a + b c$</p>\n<p>[[0]]</p>", "customMarkingAlgorithm": "", "variableReplacementStrategy": "originalfirst", "marks": 0, "scripts": {}, "unitTests": [], "showCorrectAnswer": true, "extendBaseMarkingAlgorithm": true, "gaps": [{"mustBeReduced": false, "variableReplacements": [], "customMarkingAlgorithm": "", "variableReplacementStrategy": "originalfirst", "correctAnswerStyle": "plain", "marks": "1", "scripts": {}, "correctAnswerFraction": false, "unitTests": [], "showCorrectAnswer": true, "allowFractions": false, "extendBaseMarkingAlgorithm": true, "minValue": "{a} + {b}*{c}-0.1", "notationStyles": ["plain", "en", "si-en"], "mustBeReducedPC": 0, "showFeedbackIcon": true, "type": "numberentry", "maxValue": "{a} + {b}*{c}+0.1"}], "showFeedbackIcon": true, "type": "gapfill"}, {"sortAnswers": false, "variableReplacements": [], "prompt": "<p>$ b ^2 - \\sqrt{c}$</p>\n<p>[[0]]</p>", "customMarkingAlgorithm": "", "variableReplacementStrategy": "originalfirst", "marks": 0, "scripts": {}, "unitTests": [], "showCorrectAnswer": true, "extendBaseMarkingAlgorithm": true, "gaps": [{"mustBeReduced": false, "customMarkingAlgorithm": "", "scripts": {}, "unitTests": [], "showCorrectAnswer": true, "variableReplacementStrategy": "originalfirst", "minValue": "{b}^2 - sqrt{c}-0.1", "correctAnswerStyle": "plain", "showPrecisionHint": false, "maxValue": "{b}^2 - sqrt{c}+0.1", "variableReplacements": [], "strictPrecision": true, "precision": "2", "marks": "1.25", "precisionMessage": "You have not given your answer to the correct precision.", "type": "numberentry", "allowFractions": false, "extendBaseMarkingAlgorithm": true, "correctAnswerFraction": false, "notationStyles": ["plain", "en", "si-en"], "precisionType": "dp", "showFeedbackIcon": true, "mustBeReducedPC": 0, "precisionPartialCredit": "50"}], "showFeedbackIcon": true, "type": "gapfill"}, {"sortAnswers": false, "variableReplacements": [], "prompt": "<p>$ \\dfrac{c^3 -a}{b+ a}$</p>\n<p>[[0]]</p>", "customMarkingAlgorithm": "", "variableReplacementStrategy": "originalfirst", "marks": 0, "scripts": {}, "unitTests": [], "showCorrectAnswer": true, "extendBaseMarkingAlgorithm": true, "gaps": [{"mustBeReduced": false, "customMarkingAlgorithm": "", "scripts": {}, "unitTests": [], "showCorrectAnswer": true, "variableReplacementStrategy": "originalfirst", "minValue": "(({c}^3 -a})/({b}+{a}))-0.1", "correctAnswerStyle": "plain", "showPrecisionHint": false, "maxValue": "0.1+({c}^3 -a})/({b}+{a})", "variableReplacements": [], "strictPrecision": true, "precision": "2", "marks": "1.75", "precisionMessage": "You have not given your answer to the correct precision.", "type": "numberentry", "allowFractions": false, "extendBaseMarkingAlgorithm": true, "correctAnswerFraction": false, "notationStyles": ["plain", "en", "si-en"], "precisionType": "dp", "showFeedbackIcon": true, "mustBeReducedPC": 0, "precisionPartialCredit": "50"}], "showFeedbackIcon": true, "type": "gapfill"}], "advice": "<p>You need to check in which order your calculator carries out the operations.</p>\n<p>If, when you input $2+3 \\times 4$ you get the answer $14$, then your calculator is scientific and will perform multiplication and division before addition and subtraction. If you get the answer $20$ then your calculator is performing operations in the order written.</p>\n<p>Be careful with negative numbers. Remember that squaring a negative number gives a positive number. For instance if you are using your calculator to find the square of $-6$ you need to input $(-6)^2$, not $-6^2$.</p>", "statement": "<p>If $a = \\var{a}, \\ b= \\var{b}$ and&nbsp; $c= \\var{c}$, use your calculator to work out the value of the following expressions. Round your answer to 2 d. p. where necessary.</p>", "metadata": {"licence": "Creative Commons Attribution 4.0 International", "description": "<p>Understanding order of operations on a calculator and using power and root keys.</p>"}, "variablesTest": {"condition": "", "maxRuns": 100}, "extensions": [], "preamble": {"css": "", "js": ""}, "variable_groups": [], "tags": [], "name": "Ioannis's copy of Using your Calculator Effectively", "functions": {}, "type": "question", "contributors": [{"name": "Ioannis Lignos", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/757/"}]}]}], "contributors": [{"name": "Ioannis Lignos", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/757/"}]}