diff --git a/libraries/AP_Math/examples/eulers/eulers.pde b/libraries/AP_Math/examples/eulers/eulers.pde
index 47575ef8b1..4f310f35e3 100644
--- a/libraries/AP_Math/examples/eulers/eulers.pde
+++ b/libraries/AP_Math/examples/eulers/eulers.pde
@@ -268,7 +268,7 @@ void test_frame_transforms(void)
 static float rand_num(void)
 {
     float ret = ((unsigned)random()) % 2000000;
-    return (ret - 1.0e6) / 1.0e6;
+    return (ret - 1.0e6f) / 1.0e6f;
 }
 
 void test_matrix_rotate(void)
diff --git a/libraries/AP_Math/examples/location/location.pde b/libraries/AP_Math/examples/location/location.pde
index 0f763ccbec..184b9dd4ad 100644
--- a/libraries/AP_Math/examples/location/location.pde
+++ b/libraries/AP_Math/examples/location/location.pde
@@ -69,8 +69,8 @@ static const struct {
 static struct Location location_from_point(Vector2f pt)
 {
     struct Location loc = {0};
-    loc.lat = pt.x * 1.0e7;
-    loc.lng = pt.y * 1.0e7;
+    loc.lat = pt.x * 1.0e7f;
+    loc.lng = pt.y * 1.0e7f;
     return loc;
 }
 
@@ -130,8 +130,8 @@ static void test_offset(void)
 {
     struct Location loc;
 
-    loc.lat = -35*1.0e7;
-    loc.lng = 149*1.0e7;
+    loc.lat = -35*1.0e7f;
+    loc.lng = 149*1.0e7f;
 
     for (uint8_t i=0; i<ARRAY_LENGTH(test_offsets); i++) {
         test_one_offset(loc,
diff --git a/libraries/AP_Math/examples/polygon/polygon.pde b/libraries/AP_Math/examples/polygon/polygon.pde
index 36f8b54d43..75288cbf51 100644
--- a/libraries/AP_Math/examples/polygon/polygon.pde
+++ b/libraries/AP_Math/examples/polygon/polygon.pde
@@ -89,8 +89,8 @@ void setup(void)
         result = Polygon_outside(test_points[i].point,
                 OBC_boundary, ARRAY_LENGTH(OBC_boundary));
         hal.console->printf_P(PSTR("%10f,%10f  %s  %s\n"),
-                        1.0e-7*test_points[i].point.x,
-                        1.0e-7*test_points[i].point.y,
+                        1.0e-7f*test_points[i].point.x,
+                        1.0e-7f*test_points[i].point.y,
                         result ? "OUTSIDE" : "INSIDE ",
                         result == test_points[i].outside ? "PASS" : "FAIL");
         if (result != test_points[i].outside) {
diff --git a/libraries/AP_Math/examples/rotations/rotations.pde b/libraries/AP_Math/examples/rotations/rotations.pde
index b6141b5ffd..7ebe620e8d 100644
--- a/libraries/AP_Math/examples/rotations/rotations.pde
+++ b/libraries/AP_Math/examples/rotations/rotations.pde
@@ -81,7 +81,7 @@ static void test_euler(enum Rotation rotation, float roll, float pitch, float ya
 {
     Vector3f v, v1, v2, diff;
     Matrix3f rotmat;
-    const float accuracy = 1.0e-6;
+    const float accuracy = 1.0e-6f;
 
     v.x = 1;
     v.y = 2;