diff --git a/CHANGELOG.md b/CHANGELOG.md
index 07f0f59a7db5fa4244aab38e747434395f1bfa60..f8d9b9d5fdde6e34886b1dbf6c59daa20f714edc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,7 @@ This changelog aims to follow the guiding principles of
 - Bitwise and.
 - Gaussian Blur for 7x7 kernels.
 - Scale function for float.
+- Add, subtract, multiply & absdiff enabled in OpenCV HAL.
 
 ### Fixed
 
diff --git a/adapters/opencv/kleidicv_hal.h b/adapters/opencv/kleidicv_hal.h
index 1751b73c04109a8dc69e39edd2d11694f8a48b6b..5878c01152b5561092b7f06a6f29c7a725dc1ee4 100644
--- a/adapters/opencv/kleidicv_hal.h
+++ b/adapters/opencv/kleidicv_hal.h
@@ -346,8 +346,6 @@ static inline int kleidicv_compare_u8_with_fallback(
 #undef cv_hal_cmp8u
 #define cv_hal_cmp8u kleidicv_compare_u8_with_fallback
 
-#if KLEIDICV_ENABLE_ALL_OPENCV_HAL
-
 // clang-format off
 #undef cv_hal_add8s
 #define cv_hal_add8s(...) KLEIDICV_HAL_FORWARD(kleidicv_saturating_add_s8, __VA_ARGS__)
@@ -357,8 +355,6 @@ static inline int kleidicv_compare_u8_with_fallback(
 #define cv_hal_add16s(...) KLEIDICV_HAL_FORWARD(kleidicv_saturating_add_s16, __VA_ARGS__)
 #undef cv_hal_add16u
 #define cv_hal_add16u(...) KLEIDICV_HAL_FORWARD(kleidicv_saturating_add_u16, __VA_ARGS__)
-#undef cv_hal_add32s
-#define cv_hal_add32s(...) KLEIDICV_HAL_FORWARD(kleidicv_saturating_add_s32, __VA_ARGS__)
 
 #undef cv_hal_sub8s
 #define cv_hal_sub8s(...) KLEIDICV_HAL_FORWARD(kleidicv_saturating_sub_s8, __VA_ARGS__)
@@ -368,8 +364,6 @@ static inline int kleidicv_compare_u8_with_fallback(
 #define cv_hal_sub16s(...) KLEIDICV_HAL_FORWARD(kleidicv_saturating_sub_s16, __VA_ARGS__)
 #undef cv_hal_sub16u
 #define cv_hal_sub16u(...) KLEIDICV_HAL_FORWARD(kleidicv_saturating_sub_u16, __VA_ARGS__)
-#undef cv_hal_sub32s
-#define cv_hal_sub32s(...) KLEIDICV_HAL_FORWARD(kleidicv_saturating_sub_s32, __VA_ARGS__)
 
 #undef cv_hal_absdiff8s
 #define cv_hal_absdiff8s(...) KLEIDICV_HAL_FORWARD(kleidicv_saturating_absdiff_s8, __VA_ARGS__)
@@ -379,8 +373,6 @@ static inline int kleidicv_compare_u8_with_fallback(
 #define cv_hal_absdiff16s(...) KLEIDICV_HAL_FORWARD(kleidicv_saturating_absdiff_s16, __VA_ARGS__)
 #undef cv_hal_absdiff16u
 #define cv_hal_absdiff16u(...) KLEIDICV_HAL_FORWARD(kleidicv_saturating_absdiff_u16, __VA_ARGS__)
-#undef cv_hal_absdiff32s
-#define cv_hal_absdiff32s(...) KLEIDICV_HAL_FORWARD(kleidicv_saturating_absdiff_s32, __VA_ARGS__)
 
 #undef cv_hal_and8u
 #define cv_hal_and8u(...) KLEIDICV_HAL_FORWARD(kleidicv_bitwise_and, __VA_ARGS__)
@@ -416,12 +408,6 @@ KLEIDICV_HAL_MUL(mul16s, kleidicv_saturating_multiply_s16, int16_t);
 #undef cv_hal_mul16s
 #define cv_hal_mul16s kleidicv_mul16s_with_fallback
 
-KLEIDICV_HAL_MUL(mul32s, kleidicv_saturating_multiply_s32, int32_t);
-#undef cv_hal_mul32s
-#define cv_hal_mul32s kleidicv_mul32s_with_fallback
-
-#endif  // KLEIDICV_ENABLE_ALL_OPENCV_HAL
-
 #endif  // OPENCV_CORE_HAL_REPLACEMENT_HPP
 
 // Remove no longer needed macro definitions.
diff --git a/conformity/opencv/test_binary_op.cpp b/conformity/opencv/test_binary_op.cpp
index cc772012c91506a07c2e961b8d01b4db1834ec6d..b5e0c297b91b160bd8f1403429a286a070733c85 100644
--- a/conformity/opencv/test_binary_op.cpp
+++ b/conformity/opencv/test_binary_op.cpp
@@ -81,9 +81,14 @@ static bool test_binary_op(int index, RecreatedMessageQueue& request_queue,
 std::vector<test>& binary_op_tests_get() {
   static std::vector<test> tests = {
       BINARY_OP_TEST(add, CV_8SC1, int8_t),
+      BINARY_OP_TEST(add, CV_32SC1, int32_t),
       BINARY_OP_TEST(sub, CV_8UC2, uint8_t),
+      BINARY_OP_TEST(sub, CV_32SC1, int32_t),
+      BINARY_OP_TEST(mul, CV_8SC2, int8_t),
       BINARY_OP_TEST(mul, CV_16UC3, uint16_t),
+      BINARY_OP_TEST(mul, CV_32SC1, int32_t),
       BINARY_OP_TEST(absdiff, CV_16SC4, int16_t),
+      BINARY_OP_TEST(absdiff, CV_32SC1, int32_t),
       BINARY_OP_TEST(bitwise_and, CV_32SC2, int32_t),
       BINARY_OP_TEST(compare_equal, CV_8UC1, uint8_t),
       BINARY_OP_TEST(compare_greater, CV_8UC1, uint8_t),
diff --git a/doc/opencv.md b/doc/opencv.md
index a2047eea07f435ce7dbb3a008ba776aae1f84656..0257535bd58fbda08e4dae8c33fd67a6318d9960 100644
--- a/doc/opencv.md
+++ b/doc/opencv.md
@@ -20,6 +20,26 @@ to decide whether to enable KleidiCV in a multicore environment.
 
 ## Functionality in KleidiCV OpenCV HAL
 
+### `add`, `subtract`, `absdiff`
+Element-wise addition, subtraction and absolute difference.
+
+Notes on parameters:
+* `depth` - `CV_8U`, `CV_8S`, `CV_16U` & `CV_16S` are supported.
+  `CV_32S` is not supported as KleidiCV does not currently provide the
+  non-saturating implementation required by OpenCV for this type.
+
+### `multiply`
+Element-wise multiplication.
+
+Notes on parameters:
+* `depth` - `CV_8U`, `CV_8S`, `CV_16U` & `CV_16S` are supported.
+  `CV_32S` is not supported as KleidiCV does not currently provide the
+  non-saturating implementation required by OpenCV for this type.
+* `scale` - only a value of 1.0 is supported.
+
+### `bitwise_and`
+Bitwise conjunction of two arrays.
+
 ### `gray_to_bgr`
 Converts grayscale images to RGB or RGBA.