diff --git a/packages/desktop-client/src/components/table.tsx b/packages/desktop-client/src/components/table.tsx
index 59ff2f19565..96fd84131b6 100644
--- a/packages/desktop-client/src/components/table.tsx
+++ b/packages/desktop-client/src/components/table.tsx
@@ -339,11 +339,25 @@ function InputValue({
     }
   }
 
+  const ops = ['+', '-', '*', '/', '^'];
+
+  function valueIsASingleOperator(text) {
+    return text?.length === 1 && ops.includes(text.charAt(0));
+  }
+
+  function setValue_(text) {
+    if (valueIsASingleOperator(text)) {
+      setValue(defaultValue + text);
+    } else {
+      setValue(text);
+    }
+  }
+
   return (
     <Input
       {...props}
       value={value}
-      onChangeValue={text => setValue(text)}
+      onChangeValue={text => setValue_(text)}
       onBlur={onBlur_}
       onUpdate={onUpdate}
       onKeyDown={onKeyDown}