<?xml version="1.0" encoding="us-ascii"?><InstanceReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><Version>2.4.0.8</Version><ReportLongName>080400 - Disclosure - INVENTORY (Tables)</ReportLongName><DisplayLabelColumn>true</DisplayLabelColumn><ShowElementNames>false</ShowElementNames><RoundingOption /><HasEmbeddedReports>false</HasEmbeddedReports><Columns><Column FlagID="0"><Id>1</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><CurrencyCode /><FootnoteIndexer /><hasSegments>false</hasSegments><hasScenarios>false</hasScenarios><MCU><KeyName /><CurrencySymbol /><contextRef><ContextID>c20130101to20130630</ContextID><EntitySchema>http://www.sec.gov/CIK</EntitySchema><EntityValue>0001052257</EntityValue><PeriodDisplayName /><PeriodType>duration</PeriodType><PeriodStartDate>2013-01-01T00:00:00</PeriodStartDate><PeriodEndDate>2013-06-30T00:00:00</PeriodEndDate><Segments /><Scenarios /></contextRef><UPS /><CurrencyCode /><OriginalCurrencyCode /></MCU><CurrencySymbol /><Labels><Label Key="CalendarSupplement" Id="0" Label="6 Months Ended" /><Label Key="Calendar" Id="1" Label="Jun. 30, 2013" /></Labels></Column></Columns><Rows><Row FlagID="0"><Id>1</Id><IsAbstractGroupTitle>true</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><Level>1</Level><ElementName>us-gaap_InventoryDisclosureAbstract</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText /><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>xbrli:stringItemType</ElementDataType><SimpleDataType>string</SimpleDataType><IsTotalLabel>false</IsTotalLabel><UnitID>0</UnitID><Label>INVENTORY [Abstract]</Label></Row><Row FlagID="0"><Id>2</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><Level>2</Level><ElementName>us-gaap_ScheduleOfInventoryCurrentTableTextBlock</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><PreferredLabelRole>label</PreferredLabelRole><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="c20130101to20130630" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>&lt;div style="font-family: 'Times New Roman', Times, serif; font-size: 10pt;"&gt;&lt;div style="font-size: 10pt; font-family: Times New Roman; text-align: justify; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;At June 30, 2013 and December 31, 2012, inventory consists of the following:&lt;/div&gt;&lt;div style="text-align: justify; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;&amp;#160;&lt;/div&gt;&lt;div&gt;&lt;table cellpadding="0" cellspacing="0" style="font-size: 10pt; font-family: times new roman; width: 100%;"&gt;&lt;tr&gt;&lt;td valign="top" style="font-size: 10pt; font-family: times new roman; display: inline; width: 31%;"&gt;&amp;#160; &lt;/td&gt;&lt;td valign="top" style="border-bottom: black 2px solid; width: 13%;"&gt;&lt;div style="font-size: 10pt; font-family: times new roman; font-weight: bold; text-align: center; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;6/30/13&lt;/div&gt;&lt;/td&gt;&lt;td valign="top" style="font-size: 10pt; font-family: times new roman; display: inline; width: 3%;"&gt;&amp;#160; &lt;/td&gt;&lt;td valign="top" style="border-bottom: black 2px solid; width: 13%;"&gt;&lt;div style="font-size: 10pt; font-family: times new roman; font-weight: bold; text-align: center; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;12/31/12&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr bgcolor="#cceeff"&gt;&lt;td align="left" valign="top" style="width: 31%;"&gt;&lt;div style="font-size: 10pt; font-family: times new roman; text-align: left; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;Raw materials&lt;/div&gt;&lt;/td&gt;&lt;td align="right" valign="top" style="width: 13%;"&gt;&lt;div style="font-size: 10pt; font-family: times new roman; text-align: right; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;&amp;#160;$176,678&lt;/div&gt;&lt;/td&gt;&lt;td valign="top" style="font-size: 10pt; font-family: times new roman; display: inline; width: 3%;"&gt;&amp;#160; &lt;/td&gt;&lt;td align="right" valign="top" style="width: 13%;"&gt;&lt;div style="font-size: 10pt; font-family: times new roman; text-align: right; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;&amp;#160;$42,831&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr bgcolor="white"&gt;&lt;td align="left" valign="top" style="width: 31%;"&gt;&lt;div style="font-size: 10pt; font-family: times new roman; text-align: left; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;Packaging&lt;/div&gt;&lt;/td&gt;&lt;td align="right" valign="top" style="width: 13%;"&gt;&lt;div style="font-size: 10pt; font-family: times new roman; text-align: right; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;&amp;#160;11,338&lt;/div&gt;&lt;/td&gt;&lt;td valign="top" style="font-size: 10pt; font-family: times new roman; display: inline; width: 3%;"&gt;&amp;#160; &lt;/td&gt;&lt;td align="right" valign="top" style="width: 13%;"&gt;&lt;div style="font-size: 10pt; font-family: times new roman; text-align: right; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;&amp;#160;1,873&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr bgcolor="#cceeff"&gt;&lt;td align="left" valign="top" style="width: 31%;"&gt;&lt;div style="font-size: 10pt; font-family: times new roman; text-align: left; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;Work-in-process&lt;/div&gt;&lt;/td&gt;&lt;td align="right" valign="top" style="width: 13%;"&gt;&lt;div style="font-size: 10pt; font-family: times new roman; text-align: right; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;&amp;#160;18,930&lt;/div&gt;&lt;/td&gt;&lt;td valign="top" style="font-size: 10pt; font-family: times new roman; display: inline; width: 3%;"&gt;&amp;#160; &lt;/td&gt;&lt;td align="right" valign="top" style="width: 13%;"&gt;&lt;div style="font-size: 10pt; font-family: times new roman; text-align: right; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;&amp;#160;64,170&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr bgcolor="white"&gt;&lt;td align="left" valign="top" style="width: 31%;"&gt;&lt;div style="font-size: 10pt; font-family: times new roman; text-align: left; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;Finished goods&lt;/div&gt;&lt;/td&gt;&lt;td align="right" valign="top" style="width: 13%;"&gt;&lt;div style="font-size: 10pt; font-family: times new roman; text-align: right; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;&amp;#160;787,917&lt;/div&gt;&lt;/td&gt;&lt;td valign="top" style="font-size: 10pt; font-family: times new roman; display: inline; width: 3%;"&gt;&amp;#160; &lt;/td&gt;&lt;td align="right" valign="top" style="width: 13%;"&gt;&lt;div style="font-size: 10pt; font-family: times new roman; text-align: right; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;&amp;#160;360,428&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr bgcolor="#cceeff"&gt;&lt;td valign="top" style="font-size: 10pt; font-family: times new roman; display: inline; width: 31%;"&gt;&amp;#160; &lt;/td&gt;&lt;td valign="top" style="font-size: 10pt; font-family: times new roman; display: inline; width: 13%;"&gt;&amp;#160; &lt;/td&gt;&lt;td valign="top" style="font-size: 10pt; font-family: times new roman; display: inline; width: 3%;"&gt;&amp;#160; &lt;/td&gt;&lt;td valign="top" style="font-size: 10pt; font-family: times new roman; display: inline; width: 13%;"&gt;&amp;#160; &lt;/td&gt;&lt;/tr&gt;&lt;tr bgcolor="white"&gt;&lt;td valign="top" style="font-size: 10pt; font-family: times new roman; display: inline; width: 31%;"&gt;&amp;#160; &lt;/td&gt;&lt;td align="right" valign="top" style="border-bottom: black 4px double; width: 13%;"&gt;&lt;div style="font-size: 10pt; font-family: times new roman; text-align: right; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;&amp;#160;$994,863&lt;/div&gt;&lt;/td&gt;&lt;td valign="top" style="font-size: 10pt; font-family: times new roman; display: inline; width: 3%;"&gt;&amp;#160; &lt;/td&gt;&lt;td align="right" valign="top" style="border-bottom: black 4px double; width: 13%;"&gt;&lt;div style="font-size: 10pt; font-family: times new roman; text-align: right; margin-left: 0pt; display: block; margin-right: 0pt; text-indent: 0pt;"&gt;&amp;#160;$469,302&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div&gt;&amp;#160;&lt;/div&gt;&lt;/div&gt;</NonNumbericText><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>nonnum:textBlockItemType</ElementDataType><SimpleDataType>na</SimpleDataType><ElementDefenition>Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.</ElementDefenition><ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef

 -Publisher SEC

 -Name Regulation S-X (SX)

 -Number 210

 -Section 2

 -Paragraph 6

 -Subparagraph a,b,c

 -Article 5



</ElementReferences><IsTotalLabel>false</IsTotalLabel><UnitID>0</UnitID><Label>Summary of inventory</Label></Row></Rows><Footnotes /><IsEquityReport>false</IsEquityReport><ReportName>INVENTORY (Tables)</ReportName><MonetaryRoundingLevel>UnKnown</MonetaryRoundingLevel><SharesRoundingLevel>UnKnown</SharesRoundingLevel><PerShareRoundingLevel>UnKnown</PerShareRoundingLevel><ExchangeRateRoundingLevel>UnKnown</ExchangeRateRoundingLevel><HasCustomUnits>true</HasCustomUnits><IsEmbedReport>false</IsEmbedReport><IsMultiCurrency>false</IsMultiCurrency><ReportType>Sheet</ReportType><RoleURI>http://ztrim.com/role/InventoryTables</RoleURI><NumberOfCols>1</NumberOfCols><NumberOfRows>2</NumberOfRows></InstanceReport>
