diff --git a/tests/cql/CqlArithmeticFunctionsTest.xml b/tests/cql/CqlArithmeticFunctionsTest.xml
index 72e3d73..8c69a47 100644
--- a/tests/cql/CqlArithmeticFunctionsTest.xml
+++ b/tests/cql/CqlArithmeticFunctionsTest.xml
@@ -725,19 +725,32 @@
 			<expression>predecessor of 1L</expression>
 			<output>0L</output>
 		</test>
-		<test name="PredecessorOf1D" version="1.0">
+		<test name="PredecessorOf1D" version="1.0" versionTo="1.5.3">
 			<expression>predecessor of 1.0</expression>
 			<output>0.99999999</output>
 		</test>
-		<test name="PredecessorOf101D" version="1.0">
+		<test name="PredecessorOf101D" version="1.0" versionTo="1.5.3">
 			<expression>predecessor of 1.01</expression>
 			<output>1.00999999</output>
 		</test>
-		<test name="PredecessorOf1QCM" version="1.0">
+		<test name="PredecessorOf1DPrecision" version="2.0">
+			<expression>predecessor of 1.0</expression>
+			<output>0.9</output>
+		</test>
+		<test name="PredecessorOf101DPrecision" version="2.0">
+			<expression>predecessor of 1.01</expression>
+			<output>1.00</output>
+		</test>
+		<test name="PredecessorOf1QCM" version="1.0" versionTo="1.5.3">
 			<capability code="ucum-unit-conversion-support"/>
 			<expression>predecessor of 1.0 'cm'</expression>
 			<output>0.99999999'cm'</output>
 		</test>
+		<test name="PredecessorOf1QCMPrecision" version="2.0">
+			<capability code="ucum-unit-conversion-support"/>
+			<expression>predecessor of 1.0 'cm'</expression>
+			<output>0.9'cm'</output>
+		</test>
 		<test name="PredecessorOfJan12000" version="1.0">
 			<expression>predecessor of DateTime(2000,1,1)</expression>
 			<output>@1999-12-31T</output>
@@ -916,14 +929,22 @@
 			<expression>successor of 1L</expression>
 			<output>2L</output>
 		</test>
-		<test name="SuccessorOf1D" version="1.0">
+		<test name="SuccessorOf1D" version="1.0" versionTo="1.5.3">
 			<expression>successor of 1.0</expression>
 			<output>1.00000001</output>
 		</test>
-		<test name="SuccessorOf101D" version="1.0">
+		<test name="SuccessorOf101D" version="1.0" versionTo="1.5.3">
 			<expression>successor of 1.01</expression>
 			<output>1.01000001</output>
 		</test>
+		<test name="SuccessorOf1DPrecision" version="2.0">
+			<expression>successor of 1.0</expression>
+			<output>1.1</output>
+		</test>
+		<test name="SuccessorOf101DPrecision" version="2.0">
+			<expression>successor of 1.01</expression>
+			<output>1.02</output>
+		</test>
 		<test name="SuccessorOfJan12000" version="1.0">
 			<expression>successor of DateTime(2000,1,1)</expression>
 			<output>@2000-01-02T</output>