{ "version": "https://jsonfeed.org/version/1", "title": "Road Sign Math", "icon": "", "home_page_url": "https://www.roadsignmath.xyz/", "feed_url": "https://www.roadsignmath.xyz/feed.json", "items": [ { "id": "http://roadsignmath.micro.blog/2025/09/01/tyler-found-this-one-driving.html", "content_html": "

Tyler found this one driving up I-35W.

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$${(90-82) \\over 8 } \\times 1 \\times 2 = {6 \\over {10 - 7}}$$

\n\"\"\n", "content_text": "[Tyler](https://tyler.thingelstad.com) found this one driving up I-35W.\n\n$${(90-82) \\over 8 } \\times 1 \\times 2 = {6 \\over {10 - 7}}$$\n\n\n\"\"\n", "date_published": "2025-09-01T19:00:13-05:00", "url": "https://www.roadsignmath.xyz/2025/09/01/tyler-found-this-one-driving.html" }, { "id": "http://roadsignmath.micro.blog/2025/08/06/in-vermont-on-the-way.html", "content_html": "

In Vermont on the way to the airport.

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$$ { \\left( 25 - 1 \\right) \\over 8 } = 4 - { 3 \\over 3 } $$

\n\"\"\n", "content_text": "In Vermont on the way to the airport.\n\n$$ { \\left( 25 - 1 \\right) \\over 8 } = 4 - { 3 \\over 3 } $$\n\n\"\"\n", "date_published": "2025-08-06T20:02:54-05:00", "url": "https://www.roadsignmath.xyz/2025/08/06/in-vermont-on-the-way.html" }, { "id": "http://roadsignmath.micro.blog/2025/06/19/strategy-here-is-to-cancel.html", "content_html": "

Strategy here is to cancel a bunch of the numbers out and your left with a pretty simple winner. Tyler got this one.

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$$ \\underbrace{\\left( \\frac {35} {7} \\times 10 + 12 \\right) - 62}_0 + 6 + 3 + 2 = 11 $$

\n\"\"\n", "content_text": "Strategy here is to cancel a bunch of the numbers out and your left with a pretty simple winner. [Tyler](https://tyler.thingelstad.com) got this one. \n\n$$ \\underbrace{\\left( \\frac {35} {7} \\times 10 + 12 \\right) - 62}_0 + 6 + 3 + 2 = 11 $$\n\n\n\"\"\n", "date_published": "2025-06-19T21:34:29-05:00", "url": "https://www.roadsignmath.xyz/2025/06/19/strategy-here-is-to-cancel.html" }, { "id": "http://roadsignmath.micro.blog/2023/10/22/153816.html", "content_html": "

$$ \\sqrt { 5 - 1 } = 2 $$

\n\"\"\n", "content_text": "$$ \\sqrt { 5 - 1 } = 2 $$\n\n\"\"\n", "date_published": "2023-10-22T15:38:16-05:00", "url": "https://www.roadsignmath.xyz/2023/10/22/153816.html", "tags": ["Minnesota"] }, { "id": "http://roadsignmath.micro.blog/2023/10/22/153704.html", "title": "Mason Math", "content_html": "

$$ 105 - 5 = 136 - 36 $$

\n\"\"\n", "content_text": "$$ 105 - 5 = 136 - 36 $$\n\n\"\"\n", "date_published": "2023-10-22T15:37:04-05:00", "url": "https://www.roadsignmath.xyz/2023/10/22/153704.html", "tags": ["Minnesota"] }, { "id": "http://roadsignmath.micro.blog/2023/10/22/125959.html", "title": "Iconium", "content_html": "

$$ 7 + 12 = 19 $$

\n\"\"\n", "content_text": "$$ 7 + 12 = 19 $$\n\n\"\"\n", "date_published": "2023-10-22T12:59:59-05:00", "url": "https://www.roadsignmath.xyz/2023/10/22/125959.html" }, { "id": "http://roadsignmath.micro.blog/2023/10/22/125900.html", "content_html": "

$$ 5 + 1 = 6 $$

\n\"\"\n", "content_text": "$$ 5 + 1 = 6 $$\n\n\"\"\n", "date_published": "2023-10-22T12:59:00-05:00", "url": "https://www.roadsignmath.xyz/2023/10/22/125900.html" }, { "id": "http://roadsignmath.micro.blog/2023/10/22/sqrt.html", "content_html": "

$$ 10 + \\sqrt 4 = 12 $$

\n\"\"\n", "content_text": "$$ 10 + \\sqrt 4 = 12 $$\n\n\"\"\n", "date_published": "2023-10-22T12:58:09-05:00", "url": "https://www.roadsignmath.xyz/2023/10/22/sqrt.html" }, { "id": "http://roadsignmath.micro.blog/2023/10/21/genesis.html", "title": "Genesis (2023)", "content_html": "

All things have a beginning and the quest for mathematically significant road signs starts with this very sign.

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$$ 3 \\times 33 = 99 $$

\n\"\"\n

This sign is on I-94 East as you drive toward the Twin Cities. Each time I would drive by it when returning from North Dakota I would see the math before I would see the cities on the sign.

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“I wonder how many road signs have mathematical relationships like that?”

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And thus Road Sign Math was born.

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Given the importance of this sign, I pulled over and got a selfie with the sign itself.

\n\"\"\n

Also see Road Sign Math Rebooted!

\n", "content_text": "All things have a beginning and the quest for mathematically significant road signs starts with this very sign.\n\n$$ 3 \\times 33 = 99 $$\n\n\"\"\n\nThis sign is on I-94 East as you drive toward the Twin Cities. Each time I would drive by it when returning from North Dakota I would see the math before I would see the cities on the sign. \n\n\"I wonder how many road signs have mathematical relationships like that?\"\n\nAnd thus Road Sign Math was born.\n\nGiven the importance of this sign, I pulled over and got a selfie with the sign itself.\n\n\"\"\n\nAlso see [Road Sign Math Rebooted](https://www.thingelstad.com/2023/10/21/road-sign-math.html)!\n", "date_published": "2023-10-21T07:56:35-05:00", "url": "https://www.roadsignmath.xyz/2023/10/21/genesis.html", "tags": ["Minnesota"] }, { "id": "http://roadsignmath.micro.blog/2023/10/19/sqrt-sqrt.html", "title": "Fair Play", "content_html": "

$$ \\sqrt { 83 - \\sqrt 4 } = 6 + 3 $$

\n\"\"\n", "content_text": "$$ \\sqrt { 83 - \\sqrt 4 } = 6 + 3 $$\n\n\"\"\n", "date_published": "2023-10-19T14:50:20-05:00", "url": "https://www.roadsignmath.xyz/2023/10/19/sqrt-sqrt.html" }, { "id": "http://roadsignmath.micro.blog/2023/10/19/sqrt.html", "title": "Fair Grove", "content_html": "

$$ 11 + \\sqrt 4 = 13 $$

\n\"\"\n", "content_text": "$$ 11 + \\sqrt 4 = 13 $$\n\n\"\"\n", "date_published": "2023-10-19T14:41:41-05:00", "url": "https://www.roadsignmath.xyz/2023/10/19/sqrt.html", "tags": ["Missouri"] }, { "id": "http://roadsignmath.micro.blog/2021/08/05/saratoga.html", "title": "Saratoga", "content_html": "

Simple math on the way to Saratoga.

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$$ 14 + 10 = 24 $$

\n\"\"\n", "content_text": "Simple math on the way to Saratoga.\n\n$$ 14 + 10 = 24 $$\n\n\"\"\n", "date_published": "2021-08-05T00:00:00-05:00", "url": "https://www.roadsignmath.xyz/2021/08/05/saratoga.html" }, { "id": "http://roadsignmath.micro.blog/2021/08/04/greenbush.html", "title": "Greenbush", "content_html": "

$$ 9 + 11 = 20 $$

\n\"\"\n", "content_text": "$$ 9 + 11 = 20 $$\n\n\"\"\n", "date_published": "2021-08-04T00:00:00-05:00", "url": "https://www.roadsignmath.xyz/2021/08/04/greenbush.html" }, { "id": "http://roadsignmath.micro.blog/2021/08/02/wurtsboro.html", "title": "Wurtsboro", "content_html": "

We found this sign while driving back from visiting the Woodstock site and driving back to Accord, NY.

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$$ 12 + 1 = 13 $$

\n\"\"\n", "content_text": "We found this sign while driving back from visiting the Woodstock site and driving back to Accord, NY.\n\n$$ 12 + 1 = 13 $$\n\n\"\"\n", "date_published": "2021-08-02T00:00:00-05:00", "url": "https://www.roadsignmath.xyz/2021/08/02/wurtsboro.html" }, { "id": "http://roadsignmath.micro.blog/2021/07/31/gross-vehicle-weight.html", "title": "Gross Vehicle Weight", "content_html": "

Some fun math along I-80/I-90.

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$$ ( 70 \\div ( 90 - 80 ) ) + 13 = 65 - 45 $$

\n\"\"\n", "content_text": "Some fun math along I-80/I-90.\n\n$$ ( 70 \\div ( 90 - 80 ) ) + 13 = 65 - 45 $$\n\n\"\"\n", "date_published": "2021-07-31T00:00:00-05:00", "url": "https://www.roadsignmath.xyz/2021/07/31/gross-vehicle-weight.html" }, { "id": "http://roadsignmath.micro.blog/2021/03/04/phoenix-math.html", "title": "Phoenix Math", "content_html": "

Tammy found this amazing Road Sign Math winner on Highway 101 in Phoenix, Arizona! This is the first winning sign found in years to reboot the great game of finding math equations in road signs!

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$$ 7 + 7 + ( 3 \\times 2 ) = 19 + 1 $$

\n\"\"\n", "content_text": "[Tammy](https://tammy.thingelstad.com) found this amazing Road Sign Math winner on Highway 101 in Phoenix, Arizona! This is the first winning sign found in years to **reboot** the great game of finding math equations in road signs!\n\n$$ 7 + 7 + ( 3 \\times 2 ) = 19 + 1 $$\n\n\"\"\n", "date_published": "2021-03-04T01:00:00-05:00", "url": "https://www.roadsignmath.xyz/2021/03/04/phoenix-math.html", "tags": ["Arizona"] } ] }