diff --git a/packages/package.json b/packages/package.json
index 94543c708f..c0aef1cc48 100644
--- a/packages/package.json
+++ b/packages/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@junyiacademy/perseus-core",
-  "version": "1.0.27",
+  "version": "1.0.28",
   "main": "./dist/index.js",
   "types": "./dist/index.d.ts",
   "license": "MIT",
diff --git a/packages/perseus-editor/src/widgets/input-number-editor.tsx b/packages/perseus-editor/src/widgets/input-number-editor.tsx
index 90e79423cc..b4035ccc93 100644
--- a/packages/perseus-editor/src/widgets/input-number-editor.tsx
+++ b/packages/perseus-editor/src/widgets/input-number-editor.tsx
@@ -56,7 +56,7 @@ type Props = {
     answerType: PropsFor<typeof InputNumber.widget>["answerType"];
     rightAlign: PropsFor<typeof InputNumber.widget>["rightAlign"];
     onChange: (arg1: {
-        value?: ParsedValue | 0;
+        value?: ParsedValue | number;
         simplify?: Props["simplify"];
         size?: Props["size"];
         inexact?: Props["inexact"];
diff --git a/packages/perseus/src/util.ts b/packages/perseus/src/util.ts
index 07fe7b9990..526ac2691f 100644
--- a/packages/perseus/src/util.ts
+++ b/packages/perseus/src/util.ts
@@ -304,7 +304,9 @@ function keScoreFromPerseusScore(
  * Return the first valid interpretation of 'text' as a number, in the form
  * {value: 2.3, exact: true}.
  */
-function firstNumericalParse(text: string): ParsedValue | null | undefined {
+function firstNumericalParse(
+    text: string,
+): ParsedValue | null | undefined | number {
     // TODO(alpert): This is sort of hacky...
     let first;
     const val = KhanAnswerTypes.predicate.createValidatorFunctional(