diff --git a/nac3core/src/primitives.rs b/nac3core/src/primitives.rs
index e7777491..ced24da3 100644
--- a/nac3core/src/primitives.rs
+++ b/nac3core/src/primitives.rs
@@ -17,8 +17,11 @@ fn impl_math(def: &mut TypeDef, ty: &Type) {
         result: result.clone(),
     };
     def.methods.insert("__add__", fun.clone());
+    def.methods.insert("__iadd__", fun.clone());
     def.methods.insert("__sub__", fun.clone());
+    def.methods.insert("__isub__", fun.clone());
     def.methods.insert("__mul__", fun.clone());
+    def.methods.insert("__imul__", fun.clone());
     def.methods.insert(
         "__neg__",
         FnDef {
@@ -33,9 +36,21 @@ fn impl_math(def: &mut TypeDef, ty: &Type) {
             result: Some(PrimitiveType(FLOAT_TYPE).into()),
         },
     );
+    if ty.as_ref() == &PrimitiveType(FLOAT_TYPE) {
+        def.methods.insert(
+            "__itruediv__",
+            FnDef {
+                args: vec![ty.clone()],
+                result: Some(PrimitiveType(FLOAT_TYPE).into()),
+            },
+        );
+    }
     def.methods.insert("__floordiv__", fun.clone());
+    def.methods.insert("__ifloordiv__", fun.clone());
     def.methods.insert("__mod__", fun.clone());
-    def.methods.insert("__pow__", fun);
+    def.methods.insert("__imod__", fun.clone());
+    def.methods.insert("__pow__", fun.clone());
+    def.methods.insert("__ipow__", fun);
 }
 
 fn impl_bits(def: &mut TypeDef, ty: &Type) {