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Math Generator.html 2
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<html>
<head>
<title>Math Problem Generator 0.6.7</title>
<script>
//this copy has implementation of output mode two.
var currentWindow = window; //no longer neccesary but need to check for uses
var spaces = 5; //line breaks between problems, is used in ' "<br/>".repeat(spaces) ' to insert that many line breaks, unsure how to use in second omode.
var probs = 10;// how many problems to generate
var probsPerLine = 10;
var sameDen = false; //fraction prblems use same denminator inputs
var simpAft = true; //simplify answer after fraction problem
var Omode = 0; //output mode two is the mode where problems appere in classic worksheet format with a liine underneath and a symbol on the side
var PNM = 0; //Problem Number Mode, the way of outputing the problem number 1 is 'i+". "'. 2 is '"("+i+") "'
var numDirec = 0; //Direction of numbering for problems. 0 is horizontal and 1 is verticle.
function rNum(i){// attempt to number problems horizontaly with more than one row of questions.
var rows = Math.ceil(probs/probsPerLine);//currently does not work
var x = i % rows;
var y = i % probsPerLine; //starts at top of page
if(numDirec==0){
var newI = x + y*rows;
}
if(numDirec==1){
var newI = x*probsPerLine + y + function(){if(y==0);return 1;};
}
return newI;
}
function out(i){
i = rNum(i);//creates numbering system, either .1 xxx or (1) xxx
if(PNM==0){//plan to implement lettering for problems
return i + ". ";
}
if(PNM==1){
return "(" + i + ") ";
}
}
function random(digits){ //creates a random number with as many digits as requested, does not return one to prevent overeasy problems.
if(digits!=0){
var x = Math.floor(Math.random(1) * ("9".repeat(digits)))+1;
if(getLen(x) == digits){
if(x == 1){
return random(digits); //if output is one call function again, not best way but works pretty well.
}
else{
return x;
}
}
else{
return random(digits); //if output is wrong number of digits call this function again.
}
}
else{
return 0;
}
}
function getLen(number) { //simple function to get the length in digits of a number.
return number.toString().length;
}
var countDecimals = function (value) { //same as above but counts decimal digits, got this on code stackoverflow
if ((value % 1) != 0)
return value.toString().split(".")[1].length;
return 0;
};
function reduce(numerator,denominator){ //for reducing fractions, I got this code online and I have no idea how it works.
var gcd = function gcd(a,b){
return b ? gcd(b, a%b) : a;
};
gcd = gcd(numerator,denominator);
return [numerator/gcd, denominator/gcd];
}
function division(decimals){
for(var i = 1; i<=probs; i++){
var r1 = 3;
var r2 = 2;
var d = 0;
if(decimals==1){r1=2;r2=1;d=0;}
if(decimals==2){r1=3;r2=1;d=0;}
if(decimals==3){r1=4;r2=1;d=0;}
if(decimals==4){r1=3;r2=2;d=0;}
if(decimals==5){r1=4;r2=2;d=0;}
var n2 = random(r2);
var n1 = random(r1);
var a = n1 / n2;
if(countDecimals(a) == d){
changeOutputCol(i)
if (Omode==0){//Uses "|" and overline to make division shape
document.getElementById("output").innerHTML += out(i) + "<br/>    " + n2 + "|<span style='text-decoration: overline'>" + n1.toLocaleString() + "</span>" + "<br/>".repeat(spaces-1);
}
if (Omode==1){
document.getElementById("output").innerHTML += out(i) + n1.toLocaleString() + ' ÷ ' + n2 + " = " + "<br/>".repeat(spaces);
}
document.getElementById("output2").innerHTML += out(i) + a + "<br/>";
}
else{
i = i - 1;
}
}
}
function addFractions(){
for(var i = 1; i<=probs; i++){
var n1 = random(1);
var n2 = random(1);
var n3 = random(1);
if (sameDen == true){var n4 = n2;}
else {var n4 = random(1);}
while(n1 == n2){
var n1 = random(1);
var n2 = random(1);
if (sameDen == true){var n4 = n2;}
}
while(n3 == n4){
var n3 = random(1);
var n4 = random(1);
if (sameDen == true){var n4 = n2;}
}
var m1 = n1 * n4;
var m2 = n2 * n4;
var m3 = n3 * n2;
var m4 = n4 * n2;
var f1 = m1 + m3;
var f2 = m2;
var a = reduce(f1,f2);
var a2 = a[0] + "/" + a[1];
changeOutputCol(i)
document.getElementById("output").innerHTML += out(i) + n1 + "/" + n2 + " + " + n3 + "/" + n4 + " = " + "<br/>".repeat(spaces);
document.getElementById("output2").innerHTML += out(i) + a2 + "<br/>";
}
}
function subFractions(){
for(var i = 1; i<=probs; i++){
var n1 = random(1);
var n2 = random(1);
var n3 = random(1);
var n4 = random(1);
if (sameDen == true){var n4 = n2;}
while(n1 == n2){
var n1 = random(1);
var n2 = random(1);
if (sameDen == true){var n4 = n2;}
}
while(n3 == n4){
var n3 = random(1);
var n4 = random(1);
if (sameDen == true){var n4 = n2;}
}
var m1 = n1 * n4;
var m2 = n2 * n4;
var m3 = n3 * n2;
var m4 = n4 * n2;
var f1 = m1 - m3;
var f2 = m2;
var a = reduce(f1,f2);
var a2 = a[0] + "/" + a[1];
if(a[0]/a[1] > 0){
changeOutputCol(i)
document.getElementById("output").innerHTML += out(i) + n1 + "/" + n2 + " - " + n3 + "/" + n4 + " = " + "<br/>".repeat(spaces);
document.getElementById("output2").innerHTML += out(i) + a2 + "<br/>";
}
else{
i = i-1;
}
}
}
function simpFractions(){
for(var i = 1; i<=probs; i++){
var n1 = random(1);
var n2 = random(1);
var n1 = n1*random(1);
var n2 = n2*random(1);
var a = reduce(n1,n2);
var a2 = a[0] + "/" + a[1];
if(a[0]/a[1] > 0 && a[1] != n2){
changeOutputCol(i)
document.getElementById("output").innerHTML += out(i) + n1 + "/" + n2 + " = " + "<br/>".repeat(spaces);
document.getElementById("output2").innerHTML += "<br/>" + out(i) + a2;
}
else{
i = i-1;
}
}
}
function multFractions(){
for(var i = 1; i<=probs; i++){
var n1 = random(1);
var n2 = random(1);
var n3 = random(1);
var n4 = random(1);
if (sameDen == true){var n4 = n2;}
var m1 = n1 * n3;
var m2 = n2 * n4;
if(simpAft == true){var a = reduce(m1,m2);}
else{var a = [m1,m2];}
if(a[0]/a[1] > 0){
changeOutputCol(i)
document.getElementById("output").innerHTML += out(i) + n1 + "/" + n2 + " × " + n3 + "/" + n4 + " = " + "<br/>".repeat(spaces);
document.getElementById("output2").innerHTML += out(i) + a[0] + "/" + a[1] + "<br/>";
}
else{
i = i-1;
}
}
}
function multiplication(digits){
for(var i = 1; i<=probs; i++){
var n1 = random(Math.ceil(digits/2));
var n2 = random(Math.floor(digits/2));
var a = n1 * n2;
changeOutputCol(i)
if (Omode==0){
document.getElementById("output").innerHTML += "<div>" + out(i) + n1.toLocaleString() + ' × ' + n2.toLocaleString() + "</div>" + "<br/>".repeat(spaces);
}
if (Omode==1){
document.getElementById("output").innerHTML += out(i) + n1.toLocaleString() + ' × ' + n2.toLocaleString() + " = " + "<br/>".repeat(spaces);
}
document.getElementById("output2").innerHTML += out(i) + a.toLocaleString() + "<br/>";
}
}
function Square(digits){
for(var i = 1; i<=probs; i++){
var n = random(digits);
var a = n * n;
changeOutputCol(i)
document.getElementById("output").innerHTML += out(i) + n.toLocaleString() + " = " + "<br/>".repeat(spaces);
document.getElementById("output2").innerHTML += out(i) + a.toLocaleString() + "<br/>";
}
}
function SQRT(digits){
for(var i = 1; i<=probs; i++){
var a = random(digits);
var n = a * a;
changeOutputCol(i)
if (Omode==0){
document.getElementById("output").innerHTML += out(i) + ' ✓<span style="text-decoration: overline">' + n.toLocaleString() + "</span> = " + "<br/>".repeat(spaces);
}
if (Omode==1){
document.getElementById("output").innerHTML += out(i) + ' ✓ ' + n.toLocaleString() + " = " + "<br/>".repeat(spaces);
}
document.getElementById("output2").innerHTML += out(i) + a.toLocaleString() + "<br/>";
}
}
function createProblems(inp){
clearCols()
document.getElementById("output").innerHTML = "Questions<br/>";
document.getElementById("output2").innerHTML = "Answers<br/>";
if(document.getElementById("option").value == "Division"){
division(document.getElementById("digits").value);
}
if(document.getElementById("option").value == "Multiplication"){
multiplication(document.getElementById("digits").value);
var digits = document.getElementById("digits").value;
}
if (document.getElementById("option").value == "Frac"){
if(document.getElementById("optionFrac").value == "AddFractions"){
addFractions();
}
if(document.getElementById("optionFrac").value == "SubFractions"){
subFractions();
}
if(document.getElementById("optionFrac").value == "SimpFractions"){
simpFractions();
}
if(document.getElementById("optionFrac").value == "MFRAC"){
multFractions()
}
}
if(document.getElementById("option").value == "SQRT"){
SQRT(document.getElementById("digits").value);
}
if(document.getElementById("option").value == "SQR"){
Square(document.getElementById("digits").value);
}
}
var answers = "";
function showAnswers(){
document.getElementById("output2").style.visibility = "visible";
document.getElementById("output2").classList = "";
document.getElementById("output2").style.width = "100px";
document.getElementById("HSButton").value = "Hide Answers";
document.getElementById("HSButton").onclick = hideAnswers;
}
function hideAnswers(){
document.getElementById("output2").style.visibility = "hidden";
document.getElementById("output2").style.width = "0px";
document.getElementById("output2").classList = "noPrint";
document.getElementById("HSButton").value = "Show Answers";
document.getElementById("HSButton").onclick = showAnswers;
}
function undoSameDen(){
document.getElementById("sameDenChanger").innerText = "False";
document.getElementById("sameDenChanger").onclick = doSameDen;
sameDen = false;
}
function doSameDen(){
document.getElementById("sameDenChanger").innerText = "True";
document.getElementById("sameDenChanger").onclick = undoSameDen;
sameDen = true;
}
function undoSimpAft(){
document.getElementById("simpAftChanger").innerText = "False";
document.getElementById("simpAftChanger").onclick = doSimpAft;
simpAft = false;
}
function doSimpAft(){
document.getElementById("simpAftChanger").innerText = "True";
document.getElementById("simpAftChanger").onclick = undoSimpAft;
simpAft = true;
}
function showAdvance(){
document.getElementById("overlay").style.display = "block";
document.getElementById("menu").style.display = "block";
}
function hideAdvance(){
document.getElementById("overlay").style.display = "none";
document.getElementById("menu").style.display = "none";
}
function changeFontSize(size){
if (size=="s"){
document.getElementById("outputs").style.fontSize = "100%";
}
if (size=="m"){
document.getElementById("outputs").style.fontSize = "150%";
}
if (size=="l"){
document.getElementById("outputs").style.fontSize = "200%";
}
}
function changeOutputCol(i){
if((i-1) % probsPerLine == 0 && i != 1){
document.getElementById("output").id = "outputx";
document.getElementById("outputs").innerHTML += '<div id="output" class="output"><br/></div>';
}
}
function clearCols(){
document.getElementById("outputs").innerHTML = '<div id="output" class="output">Questions <br/></div><div id="output2">Answers <br/></div>';
}
function changeMode(){
var changed = false;
document.getElementById("inputEasyLabel").style.visibility = "visible";
document.getElementById("digits").style.visibility = "visible";
if (document.getElementById("option").value == "Division"){
document.getElementById("inputEasyLabel").innerText = "Difficulty (1-5):";
changed = true;
}
if (document.getElementById("option").value == "Multiplication"){
document.getElementById("inputEasyLabel").innerText = "Problem digits:";
changed = true;
}
if (document.getElementById("option").value == "SQRT"){
document.getElementById("inputEasyLabel").innerText = "Digits of answer:";
changed = true;
}
if (document.getElementById("option").value == "SQR"){
document.getElementById("inputEasyLabel").innerText = "Digits of problem:";
changed = true;
}
if (changed == false){
document.getElementById("inputEasyLabel").style.visibility = "hidden";
document.getElementById("digits").style.visibility = "hidden";
}
}
function onLoad(){
divisionMode();
}
function isNumber(inp){
var val = parseInt(inp.value);
var min = inp.min;
var max = inp.max;
if(inp.value != ""){
if (Number.isInteger(val) == false){
inp.value = min;
}
if (val > max){
inp.value = max;
}
if (val < min){
inp.value = min;
}
inp.value = Math.round(inp.value);
}
else{
inp.value = "";
}
}
function fracView(){
if(document.getElementById("option").value == "Frac"){
document.getElementById("optionFrac").style.visibility = "visible";
document.getElementById("optionFrac").style.width = "auto";
}
else{
document.getElementById("optionFrac").style.visibility = "hidden";
document.getElementById("optionFrac").style.width = "0";
}
}
</script>
<style>
#answer2{
visibility: hidden;
}
#optionFrac{
visibility: hidden;
width: 0;
}
#output{
width: 120px;
float: left;
}
#outputx{
width: 120px;
float:left;
}
#output2{
float:right;
font-size: 100%;
width: 100px;
}
@media print{
#output{
float: left;
}
#output2{
float:right;
}
.noPrint{
visibility: hidden;
}
}
#overlay {
position: fixed;
display: none;
width: 100%;
height: 100%;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: rgba(0,0,0,0.5);
z-index: 2;
cursor: pointer
}
#menu {
position: fixed;
display: none;
width: 50%;
height: 50%;
top: 25%;
left: 25%;
right: 25%;
bottom: 25%;
background-color: rgba(255, 255, 255, 1);
z-index: 10;
cursor: pointer;
}
.tooltip {
position: relative;
display: inline-block;
border-bottom: 1px dotted black;
}
.tooltip .tooltiptext {
visibility: hidden;
width: 120px;
background-color: black;
color: #fff;
text-align: center;
padding: 5px 0;
border-radius: 6px;
position: absolute;
z-index: 1;
}
.tooltip:hover .tooltiptext {
visibility: visible;
}
</style>
</head>
<body>
<select id="option" class="noPrint" onchange="changeMode();fracView();">
<option value="Division">Division</option>
<option value="Multiplication">Multiplication</option>
<option value="SQRT">Square Root</option>
<option value="SQR">Squares</option>
<option value="Frac">Fraction</option>
</select>
<select id="optionFrac" class="noPrint">
<option value="AddFractions">Add Fractions</option>
<option value="SubFractions">Subtract Fractions</option>
<option value="SimpFractions">Simplify Fractions</option>
<option value="MFRAC">Multiply Fractions</option>
<option value="MFRAC">Divide Fractions</option>
</select>
<input type="button" onclick="createProblems(window);" value="Go" class="noPrint"/>
<span class="noPrint" id="inputEasyLabel">Difficulty (1-5):</span><input type="number" id="digits" onchange="isNumber(this);" class="noPrint" max="5" min="1" value="1"/></br>
<input type="button" onclick="window.print();" value="Print" class="noPrint"/>
<input type="button" onclick="hideAnswers();" id="HSButton" value="Hide Answers" class="noPrint"/>
<input type="button" onclick="showAdvance();" id="SAButton" value="Show Advanced Menu" class="noPrint"/>
<div id="outputs">
<div id="output" class="output">
Questions
</div>
<div id="output2">
Answers
</div>
</div>
<div id="overlay"></div>
<div id="menu">
<div style="height: 20%; width: 35%; float: left;">
<table style="width:100%">
<tr>
<td>Font size:</td>
<td>
<select onchange="changeFontSize(this.value);" style="width: 75%;">
<option value="s" style="font-size:100%">Small</option>
<option value="m" style="font-size:150%">Medium</option>
<option value="l" style="font-size:200%">Large</option>
</select>
</td>
</tr>
<tr>
<td>Line Spaces:</td>
<td><input style="width: 75%;" onchange="isNumber(this);" onclick="spaces = this.value;" type="number" class="noPrint" max="5" min="1" value="4" disabled/></td>
</tr>
<tr>
<td>Number of problems:</td>
<td><input style="width: 75%;" onchange="isNumber(this);probs = this.value;" type="number" class="noPrint" max="50" min="5" value="10" disabled/></td>
</tr>
<tr>
<td>Problems per line:</td>
<td><input style="width: 75%;" onchange="isNumber(this);probsPerLine = this.value;" type="number" class="noPrint" max="20" min="1" value="10" disabled/></td>
</tr>
<tr>
<td>Numbering mode:</td>
<td>
<select onchange="PNM = this.value;" style="width: 75%;">
<option value=0>1. </option>
<option value=1>(1)</option>
<option value=0 disabled>a. </option>
<option value=1 disabled>(a)</option>
</select>
</td>
</tr>
</table>
</div>
<br/><div style="float: left; width: 50%;">
Fractions:<br/><br/>
<text title="Use the same denominator for fraction problems; means students do not have to convert fractions to same form.">Use same denominator: </text><text onclick="doSameDen();" id="sameDenChanger">False</text><br/>
<text title="After doing fraction problems simplify answer; means students have to simplyfy their answers after solving the problem.">Simplify answer for fraction problems: </text><text onclick="doSimpAft();" id="simpAftChanger">False</text>
</div><br/>
<input type="button" onclick="hideAdvance();" id="SAButton" value="Done" class="noPrint"/>
</div>
</body>
</html>