diff --git a/common.go b/common.go
index 39f3ba977..6acb7d920 100644
--- a/common.go
+++ b/common.go
@@ -385,7 +385,7 @@ func Number(num []byte, prec int) []byte {
 			num[end] = '0'
 			end++
 		}
-	} else if normExp < -3 && lenNormExp < lenIntExp {
+	} else if normExp < -3 && lenNormExp < lenIntExp && dot < end {
 		// case 2: print normalized number (0.1 <= f < 1)
 		zeroes := -normExp + origExp
 		if 0 < zeroes {
diff --git a/common_test.go b/common_test.go
index ae429fa0d..355db52e5 100644
--- a/common_test.go
+++ b/common_test.go
@@ -165,7 +165,12 @@ func TestNumber(t *testing.T) {
 		{"0.001", ".001"},
 		{"0.0001", "1e-4"},
 		{"100e1", "1e3"},
+		{"1e10", "1e10"},
+		{"1e-10", "1e-10"},
+		{"1000e-7", "1e-4"},
+		{"1000e-6", ".001"},
 		{"1.1e+1", "11"},
+		{"1.1e-1", ".11"},
 		{"1.1e6", "11e5"},
 		{"1.1e", "1.1e"},   // broken number, don't parse
 		{"1.1e+", "1.1e+"}, // broken number, don't parse
diff --git a/js/js_test.go b/js/js_test.go
index f9bf1c38f..5a5a61011 100644
--- a/js/js_test.go
+++ b/js/js_test.go
@@ -26,6 +26,8 @@ func TestJS(t *testing.T) {
 		{`"use strict"`, `"use strict"`},
 		{`1.0`, `1`},
 		{`1000`, `1e3`},
+		{`1e10`, `1e10`},
+		{`1e-10`, `1e-10`},
 		{`0b1001`, `9`},
 		{`0o11`, `9`},
 		{`0x0D`, `13`},