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Numbers and Text: JavaScript: Uncharted

Courses JavaScriptNumbers and Text

Numbers and Text

Turn familiar arithmetic into JavaScript, tame rounding surprises, and build polished text from changing values.

JavaScript
Unit 3 of 20
20 lessons
165 min
420 XP

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Lessons

20 total

1Math You Already DoRecognize ordinary situations that can be represented by arithmetic expressions.InteractiveConcept6 min20 XPOpen
2The Four OperatorsUse addition, subtraction, multiplication, and division in JavaScript expressions.CodeConcept8 min20 XPOpen
3The Leftover OperatorUse the remainder operator to find what is left after making equal groups.CodeConcept8 min20 XPOpen
4Parentheses MatterUse parentheses to make the intended arithmetic happen before multiplication.CodeConcept8 min20 XPOpen
5Powers of GrowthUse exponentiation to calculate repeated doubling.CodeConcept8 min20 XPOpen
6Rounding RealityChoose Math.round, Math.floor, and Math.ceil for different whole-number decisions.CodeConcept9 min20 XPOpen
7The Crumb MysteryPredict a floating-point result and connect it to approximate number storage.InteractiveConcept7 min20 XPOpen
8Template LiteralsInsert named values into a string with a template literal.CodeConcept8 min20 XPOpen
9Greeting BuilderCompose a complete greeting by interpolating several variables.CodeConcept8 min20 XPOpen
10Plus Means What?Predict string concatenation and convert numeric text before adding.CodeConcept9 min20 XPOpen
11Receipt Line PipelineOrder the stages that turn raw numeric values into a printed receipt line.InteractiveConcept7 min20 XPOpen
12Size and ShoutInspect a string length and change its letter case with string methods.CodeConcept8 min20 XPOpen
13Tip CalculatorCalculate a tip and final total from a subtotal and rate.CodePractice10 min20 XPOpen
14Min, Max, and AbsUse Math.min, Math.max, and Math.abs to summarize temperatures.CodeConcept8 min20 XPOpen
15Expression MatchEvaluate arithmetic expressions and match each one to its value.InteractiveConcept7 min20 XPOpen
16Road Trip MathChain distance, efficiency, and price calculations into a fuel-cost estimate.CodePractice10 min20 XPOpen
17First and Last LettersRead the first and last characters of a string with indexing and charAt.CodeConcept8 min20 XPOpen
18Template vs PlusPredict how template interpolation differs from addition with numeric values.InteractiveConcept7 min20 XPOpen
19Price Tag PolishFormat a numeric price with exactly two decimal places.CodePractice9 min20 XPOpen
20Numbers and Text Mastery CheckCalculate and format a five-line order summary from named values.CodeMastery check12 min40 XPOpen

Remember with Variables Making Decisions