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Try using the ROUND() function:
Excel 2003<TABLE style="BORDER-RIGHT: #a6aab6 1px solid; BORDER-TOP: #a6aab6 1px solid; BORDER-LEFT: #a6aab6 1px solid; BORDER-BOTTOM: #a6aab6 1px solid; BORDER-COLLAPSE: collapse; BACKGROUND-COLOR: #ffffff" cellPadding=2 rules=all><COLGROUP><COL style="BACKGROUND-COLOR: #e0e0f0" width=25><COL><COL></COLGROUP><THEAD><TR style="COLOR: #161120; BACKGROUND-COLOR: #e0e0f0; TEXT-ALIGN: center"><TH></TH><TH>A</TH><TH>B</TH></TR></THEAD><TBODY><TR><TD style="COLOR: #161120; TEXT-ALIGN: center">1</TD><TD style="TEXT-ALIGN: right">1</TD><TD style="TEXT-ALIGN: right">1</TD></TR><TR><TD style="COLOR: #161120; TEXT-ALIGN: center">2</TD><TD style="TEXT-ALIGN: right">1.1</TD><TD style="TEXT-ALIGN: right">1</TD></TR><TR><TD style="COLOR: #161120; TEXT-ALIGN: center">3</TD><TD style="TEXT-ALIGN: right">1.2</TD><TD style="TEXT-ALIGN: right">1</TD></TR><TR><TD style="COLOR: #161120; TEXT-ALIGN: center">4</TD><TD style="TEXT-ALIGN: right">1.3</TD><TD style="TEXT-ALIGN: right">1</TD></TR><TR><TD style="COLOR: #161120; TEXT-ALIGN: center">5</TD><TD style="TEXT-ALIGN: right">1.4</TD><TD style="TEXT-ALIGN: right">1</TD></TR><TR><TD style="COLOR: #161120; TEXT-ALIGN: center">6</TD><TD style="TEXT-ALIGN: right">1.5</TD><TD style="TEXT-ALIGN: right">2</TD></TR><TR><TD style="COLOR: #161120; TEXT-ALIGN: center">7</TD><TD style="TEXT-ALIGN: right">1.6</TD><TD style="TEXT-ALIGN: right">2</TD></TR><TR><TD style="COLOR: #161120; TEXT-ALIGN: center">8</TD><TD style="TEXT-ALIGN: right">1.7</TD><TD style="TEXT-ALIGN: right">2</TD></TR><TR><TD style="COLOR: #161120; TEXT-ALIGN: center">9</TD><TD style="TEXT-ALIGN: right">1.8</TD><TD style="TEXT-ALIGN: right">2</TD></TR><TR><TD style="COLOR: #161120; TEXT-ALIGN: center">10</TD><TD style="TEXT-ALIGN: right">1.9</TD><TD style="TEXT-ALIGN: right">2</TD></TR><TR><TD style="COLOR: #161120; TEXT-ALIGN: center">11</TD><TD style="TEXT-ALIGN: right">2</TD><TD style="TEXT-ALIGN: right">2</TD></TR></TBODY></TABLE><TABLE style="BORDER-RIGHT: #a6aab6 1px solid; BORDER-TOP: #a6aab6 1px solid; BORDER-LEFT: #a6aab6 1px solid; BORDER-BOTTOM: #a6aab6 1px solid; BORDER-COLLAPSE: collapse; BACKGROUND-COLOR: #ffffff" cellPadding=2 rules=all><THEAD><TR style="COLOR: #161120; BACKGROUND-COLOR: #e0e0f0; TEXT-ALIGN: center"><TH>Sheet1</TH></TR></TD></THEAD><TBODY></TBODY></TABLE>
<TABLE style="BORDER-RIGHT: black 2px solid; PADDING-RIGHT: 0.4em; BORDER-TOP: black 2px solid; PADDING-LEFT: 0.4em; PADDING-BOTTOM: 0.4em; BORDER-LEFT: black 2px solid; PADDING-TOP: 0.4em; BORDER-BOTTOM: black 2px solid; BORDER-COLLAPSE: collapse; BACKGROUND-COLOR: #ffffff" cellPadding=2 rules=all width="85%"><TBODY><TR><TD style="PADDING-RIGHT: 6px; PADDING-LEFT: 6px; PADDING-BOTTOM: 6px; PADDING-TOP: 6px">Worksheet Formulas<TABLE style="BORDER-RIGHT: #a6aab6 1px solid; BORDER-TOP: #a6aab6 1px solid; BORDER-LEFT: #a6aab6 1px solid; BORDER-BOTTOM: #a6aab6 1px solid; BORDER-COLLAPSE: collapse; BACKGROUND-COLOR: #ffffff; TEXT-ALIGN: center" cellPadding=2 rules=all width="100%"><THEAD><TR style="COLOR: #161120; BACKGROUND-COLOR: #e0e0f0"><TH width=10>Cell</TH><TH style="PADDING-LEFT: 5px; TEXT-ALIGN: left">Formula</TH></TR></THEAD><TBODY><TR><TH style="COLOR: #161120; BACKGROUND-COLOR: #e0e0f0" width=10>B1</TH><TD style="TEXT-ALIGN: left">=ROUND(A1,0)</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>