https://sizuriatto.com/blog/Short worked-example posts on everyday math.en https://sizuriatto.com/blog/how-many-fence-posts.htmlhttps://sizuriatto.com/blog/how-many-fence-posts.htmlWed, 28 Oct 2026 12:00:00 +0000Dividing the fence length by the spacing gives gaps, not posts. A 30 ft run worked out step by step, with the real spacing. https://sizuriatto.com/blog/how-many-blocks-in-a-wall.htmlhttps://sizuriatto.com/blog/how-many-blocks-in-a-wall.htmlWed, 28 Oct 2026 12:00:00 +0000A block wall is counted by the module, which includes the mortar joint. Here is the two-way count, with a 6 m wall worked out.