diff --git a/Libraries/LibJS/Runtime/CommonPropertyNames.h b/Libraries/LibJS/Runtime/CommonPropertyNames.h
index f6d96fa552..2d1d4d1d2e 100644
--- a/Libraries/LibJS/Runtime/CommonPropertyNames.h
+++ b/Libraries/LibJS/Runtime/CommonPropertyNames.h
@@ -69,6 +69,7 @@ namespace JS {
     P(asin)                                  \
     P(asinh)                                 \
     P(atan)                                  \
+    P(atan2)                                 \
     P(atanh)                                 \
     P(bind)                                  \
     P(byteLength)                            \
@@ -85,6 +86,7 @@ namespace JS {
     P(construct)                             \
     P(constructor)                           \
     P(cos)                                   \
+    P(cosh)                                  \
     P(count)                                 \
     P(countReset)                            \
     P(debug)                                 \
@@ -110,6 +112,7 @@ namespace JS {
     P(forEach)                               \
     P(from)                                  \
     P(fromCharCode)                          \
+    P(fround)                                \
     P(gc)                                    \
     P(get)                                   \
     P(getDate)                               \
@@ -137,7 +140,9 @@ namespace JS {
     P(groups)                                \
     P(has)                                   \
     P(hasOwnProperty)                        \
+    P(hypot)                                 \
     P(ignoreCase)                            \
+    P(imul)                                  \
     P(includes)                              \
     P(index)                                 \
     P(indexOf)                               \
@@ -160,6 +165,8 @@ namespace JS {
     P(length)                                \
     P(log)                                   \
     P(log1p)                                 \
+    P(log2)                                  \
+    P(log10)                                 \
     P(map)                                   \
     P(max)                                   \
     P(message)                               \
@@ -193,6 +200,7 @@ namespace JS {
     P(shift)                                 \
     P(sign)                                  \
     P(sin)                                   \
+    P(sinh)                                  \
     P(slice)                                 \
     P(some)                                  \
     P(sort)                                  \
@@ -205,6 +213,7 @@ namespace JS {
     P(substr)                                \
     P(substring)                             \
     P(tan)                                   \
+    P(tanh)                                  \
     P(test)                                  \
     P(toDateString)                          \
     P(toISOString)                           \
diff --git a/Libraries/LibJS/Runtime/MathObject.cpp b/Libraries/LibJS/Runtime/MathObject.cpp
index c4057f30ff..bdd3ec6e17 100644
--- a/Libraries/LibJS/Runtime/MathObject.cpp
+++ b/Libraries/LibJS/Runtime/MathObject.cpp
@@ -68,12 +68,21 @@ void MathObject::initialize(GlobalObject& global_object)
     define_native_function(vm.names.atanh, atanh, 1, attr);
     define_native_function(vm.names.log1p, log1p, 1, attr);
     define_native_function(vm.names.cbrt, cbrt, 1, attr);
+    define_native_function(vm.names.atan2, atan2, 2, attr);
+    define_native_function(vm.names.fround, fround, 1, attr);
+    define_native_function(vm.names.hypot, hypot, 2, attr);
+    define_native_function(vm.names.log, log, 1, attr);
+    define_native_function(vm.names.log2, log2, 1, attr);
+    define_native_function(vm.names.log10, log10, 1, attr);
+    define_native_function(vm.names.sinh, sinh, 1, attr);
+    define_native_function(vm.names.cosh, cosh, 1, attr);
+    define_native_function(vm.names.tanh, tanh, 1, attr);
 
     define_property(vm.names.E, Value(M_E), 0);
     define_property(vm.names.LN2, Value(M_LN2), 0);
     define_property(vm.names.LN10, Value(M_LN10), 0);
-    define_property(vm.names.LOG2E, Value(log2(M_E)), 0);
-    define_property(vm.names.LOG10E, Value(log10(M_E)), 0);
+    define_property(vm.names.LOG2E, Value(::log2(M_E)), 0);
+    define_property(vm.names.LOG10E, Value(::log10(M_E)), 0);
     define_property(vm.names.PI, Value(M_PI), 0);
     define_property(vm.names.SQRT1_2, Value(M_SQRT1_2), 0);
     define_property(vm.names.SQRT2, Value(M_SQRT2), 0);
@@ -293,7 +302,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::acosh)
     if (vm.exception())
         return {};
     if (number.as_double() < 1)
-        return JS::js_nan();
+        return js_nan();
     return Value(::acosh(number.as_double()));
 }
 
@@ -335,7 +344,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::atanh)
     if (vm.exception())
         return {};
     if (number.as_double() > 1 || number.as_double() < -1)
-        return JS::js_nan();
+        return js_nan();
     return Value(::atanh(number.as_double()));
 }
 
@@ -345,7 +354,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::log1p)
     if (vm.exception())
         return {};
     if (number.as_double() < -1)
-        return JS::js_nan();
+        return js_nan();
     return Value(::log1p(number.as_double()));
 }
 
@@ -357,4 +366,139 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::cbrt)
     return Value(::cbrt(number.as_double()));
 }
 
+JS_DEFINE_NATIVE_FUNCTION(MathObject::atan2)
+{
+    auto y = vm.argument(0).to_number(global_object), x = vm.argument(1).to_number(global_object);
+    auto pi_4 = M_PI_2 / 2;
+    auto three_pi_4 = pi_4 + M_PI_2;
+    if (vm.exception())
+        return {};
+    if (x.is_positive_zero()) {
+        if (y.is_positive_zero() || y.is_negative_zero())
+            return y;
+        else
+            return (y.as_double() > 0) ? Value(M_PI_2) : Value(-M_PI_2);
+    }
+    if (x.is_negative_zero()) {
+        if (y.is_positive_zero())
+            return Value(M_PI);
+        else if (y.is_negative_zero())
+            return Value(-M_PI);
+        else
+            return (y.as_double() > 0) ? Value(M_PI_2) : Value(-M_PI_2);
+    }
+    if (x.is_positive_infinity()) {
+        if (y.is_infinity())
+            return (y.is_positive_infinity()) ? Value(pi_4) : Value(-pi_4);
+        else
+            return (y.as_double() > 0) ? Value(+0.0) : Value(-0.0);
+    }
+    if (x.is_negative_infinity()) {
+        if (y.is_infinity())
+            return (y.is_positive_infinity()) ? Value(three_pi_4) : Value(-three_pi_4);
+        else
+            return (y.as_double() > 0) ? Value(M_PI) : Value(-M_PI);
+    }
+    if (y.is_infinity())
+        return (y.is_positive_infinity()) ? Value(M_PI_2) : Value(-M_PI_2);
+    if (y.is_positive_zero())
+        return (x.as_double() > 0) ? Value(+0.0) : Value(M_PI);
+    if (y.is_negative_zero())
+        return (x.as_double() > 0) ? Value(-0.0) : Value(-M_PI);
+
+    return Value(::atan2(y.as_double(), x.as_double()));
+}
+
+JS_DEFINE_NATIVE_FUNCTION(MathObject::fround)
+{
+    auto number = vm.argument(0).to_number(global_object);
+    if (vm.exception())
+        return {};
+    if (number.is_nan())
+        return js_nan();
+    return Value((float)number.as_double());
+}
+
+JS_DEFINE_NATIVE_FUNCTION(MathObject::hypot)
+{
+    if (!vm.argument_count())
+        return Value(0);
+
+    auto hypot = vm.argument(0).to_number(global_object);
+    if (vm.exception())
+        return {};
+    hypot = Value(hypot.as_double() * hypot.as_double());
+    for (size_t i = 1; i < vm.argument_count(); ++i) {
+        auto cur = vm.argument(i).to_number(global_object);
+        if (vm.exception())
+            return {};
+        hypot = Value(hypot.as_double() + cur.as_double() * cur.as_double());
+    }
+    return Value(::sqrt(hypot.as_double()));
+}
+
+JS_DEFINE_NATIVE_FUNCTION(MathObject::log)
+{
+    auto number = vm.argument(0).to_number(global_object);
+    if (vm.exception())
+        return {};
+    if (number.as_double() < 0)
+        return js_nan();
+    return Value(::log(number.as_double()));
+}
+
+JS_DEFINE_NATIVE_FUNCTION(MathObject::log2)
+{
+    auto number = vm.argument(0).to_number(global_object);
+    if (vm.exception())
+        return {};
+    if (number.as_double() < 0)
+        return js_nan();
+    return Value(::log2(number.as_double()));
+}
+
+JS_DEFINE_NATIVE_FUNCTION(MathObject::log10)
+{
+    auto number = vm.argument(0).to_number(global_object);
+    if (vm.exception())
+        return {};
+    if (number.as_double() < 0)
+        return js_nan();
+    return Value(::log10(number.as_double()));
+}
+
+JS_DEFINE_NATIVE_FUNCTION(MathObject::sinh)
+{
+    auto number = vm.argument(0).to_number(global_object);
+    if (vm.exception())
+        return {};
+    if (number.is_nan())
+        return js_nan();
+    return Value(::sinh(number.as_double()));
+}
+
+JS_DEFINE_NATIVE_FUNCTION(MathObject::cosh)
+{
+    auto number = vm.argument(0).to_number(global_object);
+    if (vm.exception())
+        return {};
+    if (number.is_nan())
+        return js_nan();
+    return Value(::cosh(number.as_double()));
+}
+
+JS_DEFINE_NATIVE_FUNCTION(MathObject::tanh)
+{
+    auto number = vm.argument(0).to_number(global_object);
+    if (vm.exception())
+        return {};
+    if (number.is_nan())
+        return js_nan();
+    if (number.is_positive_infinity())
+        return Value(1);
+    if (number.is_negative_infinity())
+        return Value(-1);
+    return Value(::tanh(number.as_double()));
+}
+
 }
diff --git a/Libraries/LibJS/Runtime/MathObject.h b/Libraries/LibJS/Runtime/MathObject.h
index ff5f779775..06f09c2e4a 100644
--- a/Libraries/LibJS/Runtime/MathObject.h
+++ b/Libraries/LibJS/Runtime/MathObject.h
@@ -64,6 +64,15 @@ private:
     JS_DECLARE_NATIVE_FUNCTION(atanh);
     JS_DECLARE_NATIVE_FUNCTION(log1p);
     JS_DECLARE_NATIVE_FUNCTION(cbrt);
+    JS_DECLARE_NATIVE_FUNCTION(atan2);
+    JS_DECLARE_NATIVE_FUNCTION(fround);
+    JS_DECLARE_NATIVE_FUNCTION(hypot);
+    JS_DECLARE_NATIVE_FUNCTION(log);
+    JS_DECLARE_NATIVE_FUNCTION(log2);
+    JS_DECLARE_NATIVE_FUNCTION(log10);
+    JS_DECLARE_NATIVE_FUNCTION(sinh);
+    JS_DECLARE_NATIVE_FUNCTION(cosh);
+    JS_DECLARE_NATIVE_FUNCTION(tanh);
 };
 
 }