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In dieser Aufgabe geht es um Addieren und Subtrahieren von Zufallszahlen

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Löse die folgenden Aufgaben:

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$\\var{a}+\\var{b}=$

", "minValue": "sum", "maxValue": "sum", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "displayAnswer": "", "showFractionHint": true, "notationStyles": ["plain-eu"], "correctAnswerStyle": "plain-eu"}, {"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "

$\\var{a}-\\var{b}=$

", "minValue": "dif", "maxValue": "dif", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "displayAnswer": "", "showFractionHint": true, "notationStyles": ["plain-eu"], "correctAnswerStyle": "plain-eu"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always", "type": "question", "contributors": [{"name": "Rymma Zhuravlova", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/25473/"}]}]}], "contributors": [{"name": "Rymma Zhuravlova", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/25473/"}]}