diff --git a/staging/src/k8s.io/apimachinery/pkg/api/resource/amount_test.go b/staging/src/k8s.io/apimachinery/pkg/api/resource/amount_test.go
index 08d2c193cec..c2dec397869 100644
--- a/staging/src/k8s.io/apimachinery/pkg/api/resource/amount_test.go
+++ b/staging/src/k8s.io/apimachinery/pkg/api/resource/amount_test.go
@@ -106,6 +106,9 @@ func TestInt64AmountMul(t *testing.T) {
 		{int64Amount{value: mostPositive, scale: -1}, 10, int64Amount{value: mostPositive, scale: -1}, false},
 		{int64Amount{value: mostPositive, scale: -1}, 0, int64Amount{value: 0, scale: 0}, true},
 		{int64Amount{value: mostPositive / 10, scale: 1}, 10, int64Amount{value: mostPositive / 10, scale: 1}, false},
+		{int64Amount{value: mostPositive, scale: 0}, -1, int64Amount{value: -mostPositive, scale: 0}, true},
+		{int64Amount{value: mostNegative, scale: 1}, 0, int64Amount{value: 0, scale: 0}, true},
+		{int64Amount{value: mostNegative, scale: 1}, 1, int64Amount{value: mostNegative, scale: 1}, false},
 	} {
 		c := test.a
 		ok := c.Mul(test.b)
diff --git a/staging/src/k8s.io/apimachinery/pkg/api/resource/quantity_test.go b/staging/src/k8s.io/apimachinery/pkg/api/resource/quantity_test.go
index 21e079ed4c7..90648b9b6bd 100644
--- a/staging/src/k8s.io/apimachinery/pkg/api/resource/quantity_test.go
+++ b/staging/src/k8s.io/apimachinery/pkg/api/resource/quantity_test.go
@@ -1151,7 +1151,16 @@ func TestMul(t *testing.T) {
 		{decQuantity(50, 0, DecimalSI), 0, decQuantity(0, 0, DecimalSI), true},
 		{Quantity{Format: DecimalSI}, 0, decQuantity(0, 0, DecimalSI), true},
 
+		{decQuantity(10, 0, DecimalSI), -10, decQuantity(-100, 0, DecimalSI), true},
+		{decQuantity(-10, 0, DecimalSI), 1, decQuantity(-10, 0, DecimalSI), true},
+		{decQuantity(10, 0, BinarySI), -1, decQuantity(-10, 0, BinarySI), true},
+		{decQuantity(-50, 0, DecimalSI), 0, decQuantity(0, 0, DecimalSI), true},
+		{decQuantity(-50, 0, DecimalSI), -50, decQuantity(2500, 0, DecimalSI), true},
+		{Quantity{Format: DecimalSI}, -50, decQuantity(0, 0, DecimalSI), true},
+
 		{decQuantity(mostPositive, 0, DecimalSI), 10, decQuantity(mostPositive, 1, DecimalSI), false},
+		{decQuantity(mostNegative, 0, DecimalSI), 10, decQuantity(mostNegative, 1, DecimalSI), false},
+		{decQuantity(mostPositive, 0, DecimalSI), -10, decQuantity(-mostPositive, 1, DecimalSI), false},
 	}
 
 	for i, test := range tests {