diff --git a/src/value/ops.rs b/src/value/ops.rs
index 609bd45..447bf85 100644
--- a/src/value/ops.rs
+++ b/src/value/ops.rs
@@ -8,7 +8,8 @@ use crate::value::Value;
 impl Add for Value {
     type Output = SassResult<Self>;
 
-    fn add(self, other: Self) -> Self::Output {
+    fn add(self, mut other: Self) -> Self::Output {
+        other = other.eval()?;
         Ok(match self {
             Self::Important | Self::True | Self::False => match other {
                 Self::Ident(s, QuoteKind::Double) | Self::Ident(s, QuoteKind::Single) => {
@@ -55,7 +56,6 @@ impl Add for Value {
                     )
                 }
             },
-            // Self::List(..) => todo!(),
             Self::Color(c) => match other {
                 Self::Ident(s, QuoteKind::Double) | Self::Ident(s, QuoteKind::Single) => {
                     Value::Ident(format!("{}{}", c, s), QuoteKind::Double)
@@ -67,7 +67,6 @@ impl Add for Value {
                 _ => return Err(format!("Undefined operation \"{} + {}\".", c, other).into()),
             },
             Self::BinaryOp(..) | Self::Paren(..) => self.eval()?,
-            // Self::Paren(..) => todo!(),
             Self::Ident(s1, quotes1) => match other {
                 Self::Ident(s2, quotes2) => {
                     let quotes = match (quotes1, quotes2) {
@@ -100,10 +99,7 @@ impl Add for Value {
                     };
                     Value::Ident(format!("{}{}", s1, c), quotes)
                 }
-                Self::BinaryOp(..) | Self::Paren(..) => {
-                    return Self::Ident(s1, quotes1) + other.eval()?
-                }
-                Self::List(..) => todo!(),
+                Self::BinaryOp(..) | Self::Paren(..) | Self::List(..) => todo!(),
             },
             _ => todo!(),
         })
@@ -113,7 +109,8 @@ impl Add for Value {
 impl Sub for Value {
     type Output = SassResult<Self>;
 
-    fn sub(self, other: Self) -> Self::Output {
+    fn sub(self, mut other: Self) -> Self::Output {
+        other = other.eval()?;
         Ok(match self {
             Self::Null => todo!(),
             Self::Dimension(num, unit) => match other {
@@ -138,7 +135,6 @@ impl Sub for Value {
                 }
                 _ => todo!(),
             },
-            // Self::List(..) => todo!(),
             Self::Color(c) => match other {
                 Self::Ident(s, quotes) => {
                     let quotes = match quotes {
@@ -213,7 +209,8 @@ impl Sub for Value {
 impl Mul for Value {
     type Output = SassResult<Self>;
 
-    fn mul(self, other: Self) -> Self::Output {
+    fn mul(self, mut other: Self) -> Self::Output {
+        other = other.eval()?;
         Ok(match self {
             Self::Null => todo!(),
             Self::Dimension(num, unit) => match other {
@@ -233,9 +230,6 @@ impl Mul for Value {
                         Value::Dimension(num * num2, Unit::Mul(vec![unit, unit2]))
                     }
                 }
-                Self::BinaryOp(..) | Self::Paren(..) => {
-                    return Self::Dimension(num, unit) * other.eval()?
-                }
                 _ => {
                     return Err(
                         format!("Undefined operation \"{}{} * {}\".", num, unit, other).into(),
@@ -277,7 +271,6 @@ impl Div for Value {
                 }
                 _ => todo!(),
             },
-            // Self::List(..) => todo!(),
             Self::Color(c) => match other {
                 Self::Ident(s, quotes) => {
                     let quotes = match quotes {
diff --git a/tests/number.rs b/tests/number.rs
index 1c1fd9b..3e32f1e 100644
--- a/tests/number.rs
+++ b/tests/number.rs
@@ -76,3 +76,8 @@ test!(
     "a {\n  color: 10 % 2;\n}\n",
     "a {\n  color: 0;\n}\n"
 );
+test!(
+    num_plus_div,
+    "a {\n  color: 1 + 3/4;\n}\n",
+    "a {\n  color: 1.75;\n}\n"
+);
diff --git a/tests/values.rs b/tests/values.rs
index f383b44..02548d2 100644
--- a/tests/values.rs
+++ b/tests/values.rs
@@ -383,3 +383,8 @@ test!(
     "a {\n  color: \"foo\" == 'foo';\n}\n",
     "a {\n  color: true;\n}\n"
 );
+test!(
+    multiple_ident_sum,
+    "a {\n  color: foo + 1 + bar + 2;\n}\n",
+    "a {\n  color: foo1bar2;\n}\n"
+);