Kid Math Examples | JavaScript Tutorial

Introduction to Kid Math

These JavaScript examples help kids learn basic math operations in an interactive way. Each example generates random math problems that children can solve, with immediate feedback provided by the JavaScript program.

Educational benefits:

Reinforces fundamental math skills
Provides immediate feedback to learners
Generates unlimited practice problems
Engages children with interactive elements
Adaptable for different skill levels

Example 1: Addition

A simple JavaScript calculator that performs the addition of two numbers. The program loads two random numbers when the web page is loaded.

// Addition Implementation
function generateAddition() {
    const num1 = Math.floor(Math.random() * 100);
    const num2 = Math.floor(Math.random() * 100);
    document.getElementById('addNum1').textContent = num1;
    document.getElementById('addNum2').textContent = num2;
    document.getElementById('addResult').textContent = '';
}

function calculateAddition() {
    const num1 = parseInt(document.getElementById('addNum1').textContent);
    const num2 = parseInt(document.getElementById('addNum2').textContent);
    const sum = num1 + num2;
    document.getElementById('addResult').textContent = 
        `${num1} + ${num2} = ${sum}`;
}

// Initialize on page load
generateAddition();

Addition Live Demo

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Example 2: Subtraction

A subtraction calculator that ensures the first number is always larger than the second to avoid negative results.

// Subtraction Implementation
function generateSubtraction() {
    const num1 = Math.floor(Math.random() * 100) + 50;
    const num2 = Math.floor(Math.random() * num1);
    document.getElementById('subNum1').textContent = num1;
    document.getElementById('subNum2').textContent = num2;
    document.getElementById('subResult').textContent = '';
}

function calculateSubtraction() {
    const num1 = parseInt(document.getElementById('subNum1').textContent);
    const num2 = parseInt(document.getElementById('subNum2').textContent);
    const difference = num1 - num2;
    document.getElementById('subResult').textContent = 
        `${num1} - ${num2} = ${difference}`;
}

// Initialize on page load
generateSubtraction();

Subtraction Live Demo

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Example 3: Multiplication

A multiplication calculator that generates problems with numbers between 1 and 12 for times table practice.

// Multiplication Implementation
function generateMultiplication() {
    const num1 = Math.floor(Math.random() * 12) + 1;
    const num2 = Math.floor(Math.random() * 12) + 1;
    document.getElementById('mulNum1').textContent = num1;
    document.getElementById('mulNum2').textContent = num2;
    document.getElementById('mulResult').textContent = '';
}

function calculateMultiplication() {
    const num1 = parseInt(document.getElementById('mulNum1').textContent);
    const num2 = parseInt(document.getElementById('mulNum2').textContent);
    const product = num1 * num2;
    document.getElementById('mulResult').textContent = 
        `${num1} × ${num2} = ${product}`;
}

// Initialize on page load
generateMultiplication();

Multiplication Live Demo

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More Math Examples

Explore more JavaScript math examples to enhance learning:

Math Drill

Timed math exercises for skill building

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Pythagoras Theorem

Visual demonstration of the Pythagorean theorem

View Example

Quadratic Graph

Plot and explore quadratic equations

View Example

Future Value Calculator

Calculate compound interest over time

View Example