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296 lines
11 KiB
HTML
296 lines
11 KiB
HTML
<!DOCTYPE html>
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<html lang="en"><!-- #BeginTemplate "/Templates/Main.dwt" --><!-- DW6 -->
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<!-- Mirrored from www.mathsisfun.com/numbers/addition.html by HTTrack Website Copier/3.x [XR&CO'2014], Sat, 29 Oct 2022 00:45:02 GMT -->
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<title>Addition</title>
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<meta name="description" content="Addition is bringing two or more numbers (or things) together to make a new total.">
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</script>
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<body id="bodybg">
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<div id="stt"></div>
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<div id="adTop"></div>
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<header>
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<div id="hdr"></div>
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<div id="tran"></div>
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<div id="adHide"></div>
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<div id="cookOK"></div>
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</header>
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<div class="mid">
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<nav>
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<div id="menuWide" class="menu"></div>
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<div id="logo"><a href="../index.html"><img src="../images/style/logo.svg" alt="Math is Fun"></a></div>
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<div id="search" role="search"></div>
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</nav>
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<article id="content" role="main">
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<!-- #BeginEditable "Body" -->
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<h1 class="center">Addition</h1>
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<h2>Addition is ...</h2>
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<p>... bringing two or more numbers (or things) together to make a new total.</p>
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<table style="border: 0; margin:auto;">
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<tbody>
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<tr>
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<td style="text-align:right;">Here 1 ball is added<br>
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to 1 ball<br>
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to make 2 balls:</td>
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<td style="text-align:center;"> </td>
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<td style="text-align:center;"><img src="images/add.jpg" alt="add two balls" height="96" width="306"></td>
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</tr>
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<tr>
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<td style="text-align:right;">Using Numerals it is:</td>
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<td class="huge" align="left"> </td>
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<td class="huge" align="left"> 1 + 1 = 2</td>
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</tr>
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<tr>
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<td style="text-align:right;"> </td>
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<td class="large" align="center"> </td>
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<td class="large" align="center"> </td>
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</tr>
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<tr>
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<td style="text-align:right;">And in words it is:</td>
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<td class="large" align="center"> </td>
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<td class="large" align="center">"One plus one equals two"</td>
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</tr>
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</tbody></table>
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<p> </p>
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<div class="example">
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<h3>Example: When we add <b>2</b> and <b>3</b> we get <b>5</b>.</h3>
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<p>We can write it like this:</p>
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<p class="center large">2 + 3 = 5</p>
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</div>
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<h2>Try It</h2>
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<p>Write this down, with the answer, using <b>numerals</b>:</p>
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<table style="border: 0; margin:auto;">
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<tbody>
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<tr>
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<td><img src="images/add-4-3.jpg" alt="4+3=?" height="88" width="336"></td>
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</tr>
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</tbody></table>
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<p class="center large">You should get: <span class="hide"> 4 + 3 = 7 </span></p>
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<h2>Have a Play</h2>
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<p>Drag the numerals to the two blue boxes see how addition works:</p>
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<div class="script" style="height: 260px;">
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images/add-drag-drop.js
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</div>
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<h2>Swapping Places</h2>
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<p>Swapping the position of the numbers we are adding still gets the same result!</p>
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<div class="simple">
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<table style="border: 0; margin:auto;">
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<tbody>
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<tr>
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<td align="center" width="200"><span class="large">3 + 2 = 5</span></td>
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<td style="text-align:center;"><img src="images/add-3-2.jpg" alt="3+2=5" height="94" width="368"></td>
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</tr>
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<tr>
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<td align="center" width="200"><i>... also ...</i></td>
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<td style="text-align:center;"> </td>
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</tr>
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<tr>
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<td align="center" width="200"><span class="large">2 + 3 = 5</span></td>
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<td style="text-align:center;"><img src="images/add-2-3.jpg" alt="2+3=5" height="92" width="364"></td>
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</tr>
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</tbody></table><br>
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</div>
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<div class="example">
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<p>More Examples:</p>
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<p class="center large">5 + 1 = <span class="style1">1 + 5</span> = 6</p>
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<p class="center large">7 + 11 = <span class="style1">11 + 7</span> = 18</p>
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<p class="center large">4 + 100 = <span class="style1">100 + 4</span> = 104</p>
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</div>
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<h2>Practice</h2>
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<p style="float:right; margin: 0 0 5px 10px;"><img src="../images/art/sage-poles.svg" alt="dog weaves through poles" style="float:left; margin: 10px;"></p>
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<p style="min-width:300px;">You get better at addition with practice, so we have:</p>
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<p class="center"><a href="math-trainer-addition.html">Math Trainer - Addition</a> (train your memory)</p>
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<p class="center"><a href="../worksheets/kindergarten.html">Kindergarten Worksheets</a> (easy addition)</p>
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<p class="center"><a href="../worksheets/addition.html">Addition Worksheets</a> (normal and advanced)</p>
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<h2>Tips and Tricks</h2>
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<p class="center">Learn more on our <a href="addition-tips-tricks.html">Addition Tips and Tricks</a> page</p>
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<h2>Addition Table</h2>
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<p>We can also
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"look up" answers for simple addition using the <a href="addition-table.html">Addition Table</a> (but it is really best to learn to remember the answers).</p>
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<div class="example">
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<div class="beach" style="float:right; margin: 0 0 5px 10px;">
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<table align="center">
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<tbody>
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<tr style="text-align:right;">
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<th width="20">+</th>
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<th width="20">1</th>
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<th width="20">2</th>
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<th width="20">3</th>
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<th width="20">4</th>
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<th width="20">5</th>
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<th width="20">6</th>
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<th width="20">7</th>
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</tr>
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<tr style="text-align:right;">
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<th>1</th>
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<td>2</td>
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<td>3</td>
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<td>4</td>
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<td>5</td>
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<td bgcolor="ddddff">6</td>
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<td>7</td>
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<td>8</td>
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</tr>
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<tr style="text-align:right;">
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<th>2</th>
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<td>3</td>
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<td>4</td>
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<td>5</td>
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<td>6</td>
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<td bgcolor="ddddff">7</td>
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<td>8</td>
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<td>9</td>
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</tr>
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<tr style="text-align:right;">
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<th bgcolor="#DDDDFF">3</th>
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<td bgcolor="#DDDDFF">4</td>
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<td bgcolor="#DDDDFF">5</td>
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<td bgcolor="#DDDDFF">6</td>
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<td bgcolor="#DDDDFF">7</td>
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<td bgcolor="#33FF00"><b>8</b></td>
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<td>9</td>
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<td>10</td>
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</tr>
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<tr style="text-align:right;">
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<th>4</th>
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<td>5</td>
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<td>6</td>
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<td>7</td>
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<td>8</td>
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<td>9</td>
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<td>10</td>
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<td>11</td>
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</tr>
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</tbody></table>
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</div>
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<h3>Example: Find 3 + 5</h3>
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<p>• find the row starting with "3"</p>
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<p>• move along to be under the column "5"</p>
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<p>• and there is the number "8", so <b>3 + 5 = 8</b></p>
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</div>
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<p> </p>
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<h2>Larger Numbers: Use Addition in Columns</h2>
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<table style="border: 0; margin:auto;">
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<tbody>
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<tr>
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<td>To add larger numbers use <a href="addition-column.html">Column Addition</a> :</td>
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<td> </td>
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<td><a href="addition-column.html"><img src="images/add-carry-below.svg" alt="Column Addition" height="96" width="53"></a></td>
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</tr>
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</tbody></table>
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<h2>Names</h2>
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<p>Other names for Addition are <b>Sum, Plus, Increase, Total</b></p>
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<p>And the numbers to be added together
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are called the "<b>Addends</b>":</p>
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<p class="center"><img src="images/addition.svg" alt="addition: addend + addend = sum" height="80" width="283"></p>
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<p> </p>
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<div class="questions">1578, 1579, 3403, 3404, 1580, 3405, 1581, 1582, 3406, 3407</div>
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<div class="related">
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<a href="addition-tips-tricks.html">Addition Tips and Tricks</a>
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<a href="addition-column.html">Addition in Columns</a>
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<a href="addition-table.html">Addition Table</a>
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<a href="../basic-math-definitions.html">Basic Math Definitions</a>
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<a href="subtraction.html">Subtraction</a>
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<a href="index.html">Numbers Index</a>
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</div>
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<!-- #EndEditable -->
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</article>
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<footer id="footer" class="centerfull noprint"></footer>
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<div id="copyrt">Copyright © 2022 Rod Pierce</div>
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