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<title>Exercise: Combine </title>
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<div class=3DSection1>

<p class=3DMsoNormal><b>Exercise: Combine <o:p></o:p></b></p>

<p class=3DMsoNormal><b><o:p>&nbsp;</o:p></b></p>

<ol style=3D'margin-top:0in' start=3D1 type=3D1>
 <li class=3DMsoNormal style=3D'mso-list:l4 level1 lfo1;tab-stops:list .5in=
'>a.
     2+3<span
     style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;
     </span>b. 10+6</li>
</ol>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal><span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>2.<span
style=3D'mso-spacerun:yes'>&nbsp; </span>a. &#8211;6 &#8211;2<span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>b. &#8211;=
11
&#8211;5<span style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;
</span>c. &#8211;14 &#8211;15<span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </spa=
n>d.
&#8211;26 &#8211;15 &#8211; 5 &#8211;14</p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<ol style=3D'margin-top:0in' start=3D3 type=3D1>
 <li class=3DMsoNormal style=3D'mso-list:l1 level1 lfo2;tab-stops:list .5in=
'><span
     class=3DGramE>a.<span style=3D'mso-spacerun:yes'>&nbsp; </span>&#8211;=
</span>3
     +2<span
     style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;
     </span>b.<span style=3D'mso-spacerun:yes'>&nbsp; </span>5 &#8211;11<sp=
an
     style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
     </span>c. &#8211;14 +15<span
     style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span=
></li>
</ol>

<p class=3DMsoNormal><span style=3D'mso-spacerun:yes'>&nbsp; </span><span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
</span><span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;</span><span class=3DGramE>d.<span
style=3D'mso-spacerun:yes'>&nbsp; </span>26</span> &#8211;15<span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;
</span>e. 12 &#8211; 13<span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;
</span>d. &#8211;23<span style=3D'mso-spacerun:yes'>&nbsp; </span>+18</p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal><b>Combine by moving the positive numbers to the front
first.<o:p></o:p></b></p>

<p class=3DMsoNormal><b><o:p>&nbsp;</o:p></b></p>

<ol style=3D'margin-top:0in' start=3D4 type=3D1>
 <li class=3DMsoNormal style=3D'mso-list:l5 level1 lfo3;tab-stops:list .5in=
'><span
     style=3D'mso-spacerun:yes'>&nbsp;</span><span class=3DGramE>a.<span
     style=3D'mso-spacerun:yes'>&nbsp; </span>23</span> &#8211; 18 +7
     &#8211;12<span
     style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
     </span>b.<span style=3D'mso-spacerun:yes'>&nbsp; </span>&#8211;6 &#821=
1;2
     +10 + 6</li>
</ol>

<p class=3DMsoNormal><span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;
</span></p>

<ol style=3D'margin-top:0in' start=3D5 type=3D1>
 <li class=3DMsoNormal style=3D'mso-list:l3 level1 lfo4;tab-stops:list .5in=
'><span
     style=3D'mso-spacerun:yes'>&nbsp;</span>a. &#8211;14 + 23 &#8211;15 &#=
8211;3
     +12<span
     style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
     </span>b. &#8211;26 +15 &#8211;5 &#8211;14 + 9</li>
</ol>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal><span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>6.<span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span><span
style=3D'mso-spacerun:yes'>&nbsp;</span>a. 19 &#8211; 13 &#8211; 9 &#8211;3
+15<span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;
</span>b. &#8211;6 +19 &#8211; 15 + 5 &#8211; 9 </p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal><b>Exercise: Combine <o:p></o:p></b></p>

<p class=3DMsoNormal><b><o:p>&nbsp;</o:p></b></p>

<ol style=3D'margin-top:0in' start=3D1 type=3D1>
 <li class=3DMsoNormal style=3D'mso-list:l2 level1 lfo5;tab-stops:list .5in=
'>a.
     2+3<span
     style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;
     </span>b. 10+6</li>
</ol>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal><span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>2.<span
style=3D'mso-spacerun:yes'>&nbsp; </span>a. &#8211;6 &#8211;2<span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>b. &#8211;=
11
&#8211;5<span style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;
</span>c. &#8211;14 &#8211;15<span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </spa=
n>d.
&#8211;26 &#8211;15 &#8211; 5 &#8211;14</p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<ol style=3D'margin-top:0in' start=3D3 type=3D1>
 <li class=3DMsoNormal style=3D'mso-list:l0 level1 lfo6;tab-stops:list .5in=
'><span
     class=3DGramE>a.<span style=3D'mso-spacerun:yes'>&nbsp; </span>&#8211;=
</span>3
     +2<span
     style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;
     </span>b.<span style=3D'mso-spacerun:yes'>&nbsp; </span>5 &#8211;11<sp=
an
     style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
     </span>c. &#8211;14 +15<span
     style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span=
></li>
</ol>

<p class=3DMsoNormal><span style=3D'mso-spacerun:yes'>&nbsp;</span><span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;</span><span class=3DGramE>d.<=
span
style=3D'mso-spacerun:yes'>&nbsp; </span>26</span> &#8211;15<span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;
</span>e. 12 &#8211; 13<span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;
</span>d. &#8211;23<span style=3D'mso-spacerun:yes'>&nbsp; </span>+18</p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal><b>Combine by moving the positive numbers to the front
first.<o:p></o:p></b></p>

<p class=3DMsoNormal><b><o:p>&nbsp;</o:p></b></p>

<ol style=3D'margin-top:0in' start=3D4 type=3D1>
 <li class=3DMsoNormal style=3D'mso-list:l6 level1 lfo7;tab-stops:list .5in=
'><span
     style=3D'mso-spacerun:yes'>&nbsp;</span><span class=3DGramE>a.<span
     style=3D'mso-spacerun:yes'>&nbsp; </span>23</span> &#8211; 18 +7
     &#8211;12<span
     style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
     </span>b.<span style=3D'mso-spacerun:yes'>&nbsp; </span>&#8211;6 &#821=
1;2
     +10 + 6</li>
</ol>

<p class=3DMsoNormal><span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;
</span></p>

<ol style=3D'margin-top:0in' start=3D5 type=3D1>
 <li class=3DMsoNormal style=3D'mso-list:l7 level1 lfo8;tab-stops:list .5in=
'>a.
     &#8211;14 + 23 &#8211;15 &#8211;3 +12<span
     style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
     </span>b. &#8211;26 +15 &#8211;5 &#8211;14 + 9</li>
</ol>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal><span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>6. <span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;</span>a. 19 &#8211; 13 &#8211; 9 &#=
8211;3
+15<span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;
</span>b. &#8211;6 +19 &#8211; 15 + 5 &#8211; 9 </p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

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