Workbook Detail

Function Machine Addition Easy — Set 5

Arithmetic B
easy Set 5 Form Exercise

Rule: x × 2. Find the missing output.

Show answer

Answer: 12

Rule
x × 2
Table
  • {"input":8,"output":16,"blank":false}
  • {"input":3,"output":6,"blank":false}
  • {"input":1,"output":2,"blank":false}
  • {"input":6,"output":null,"blank":true}

Rule: x - 3. Find the missing output.

Show answer

Answer: 7

Rule
x - 3
Table
  • {"input":10,"output":null,"blank":true}
  • {"input":9,"output":6,"blank":false}
  • {"input":11,"output":8,"blank":false}
  • {"input":5,"output":2,"blank":false}
Visual
Type: inline-svg
Svg: <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 44 44" width="44" height="44"><g transform="translate(4,4) scale(1)"><path fill="#99AAB5" d="M6.5 24C3.462 24 1 26.463 1 29.5S3.462 35 6.5 35s5.5-2.463 5.5-5.5S9.538 24 6.5 24zm0 9C4.567 33 3 31.433 3 29.5S4.567 26 6.5 26s3.5 1.567 3.5 3.5S8.433 33 6.5 33zm23-9c-3.037 0-5.5 2.463-5.5 5.5s2.463 5.5 5.5 5.5 5.5-2.463 5.5-5.5-2.463-5.5-5.5-5.5zm0 9c-1.934 0-3.5-1.567-3.5-3.5s1.566-3.5 3.5-3.5 3.5 1.567 3.5 3.5-1.566 3.5-3.5 3.5z"/><path fill="#292F33" d="M6.5 22.914c-3.59 0-6.5 2.91-6.5 6.5s2.91 6.5 6.5 6.5 6.5-2.91 6.5-6.5-2.91-6.5-6.5-6.5zm0 11c-2.485 0-4.5-2.015-4.5-4.5s2.015-4.5 4.5-4.5 4.5 2.015 4.5 4.5-2.015 4.5-4.5 4.5zm23-11c-3.59 0-6.5 2.91-6.5 6.5s2.91 6.5 6.5 6.5 6.5-2.91 6.5-6.5-2.91-6.5-6.5-6.5zm0 11c-2.485 0-4.5-2.015-4.5-4.5s2.015-4.5 4.5-4.5 4.5 2.015 4.5 4.5-2.015 4.5-4.5 4.5z"/><path fill="#77B255" d="M7.001 27.051c-2 4 .999 2.587 1.999.587.905-1.811 3.444-2.429 4.66-.375C12.708 24.213 9.863 22 6.5 22c-1.374 0-2.657.375-3.764 1.02 2.833.165 5.366 1.831 4.265 4.031z"/><path fill="#99AAB5" d="M30 29c0 .553-.447 1-1 1h-9c-.553 0-1-.447-1-1 0-.553.447-1 1-1h9c.553 0 1 .447 1 1z"/><path fill="#99AAB5" d="M29.923 30.306c-.433.344-1.062.272-1.405-.161L22.917 23.1c-.344-.433-.271-1.062.16-1.405.433-.344 1.062-.272 1.405.161l5.601 7.045c.344.432.271 1.061-.16 1.405z"/><path fill="#CCD6DD" d="M12.463 20.367c.466.297.602.915.304 1.381L7.918 29.33c-.298.465-.916.602-1.381.303-.466-.297-.602-.915-.304-1.381l4.849-7.582c.298-.465.916-.602 1.381-.303z"/><path fill="#77B255" d="M10.529 17.368C9.718 17.953 6 19 9 21s5.094 4.125 5.094 6c0 2.665-.656 4 .906 4h7s-1-4 2-7 5-2 8-3c1.897-.633 4-2 4-3s0-2-2-1-1 1.551-3 .551-3.16.449-4.16.449-7.614 1.68-8.62-.049C17.667 17 16.434 16 14.616 16c-1.318 0-3.116.667-4.087 1.368z"/><path fill="#66757F" d="M21 29c0 1.104-.895 2-2 2-1.104 0-2-.896-2-2s.896-2 2-2c1.105 0 2 .896 2 2z"/><path fill="#CCD6DD" d="M25.8 27.975l9.277-3.732 1.12 2.783-9.278 3.732z"/><path fill="#FFF" d="M26.173 28.902l9.277-3.732.373.928-9.277 3.732z"/><path fill="#66757F" d="M26.546 29.83l9.277-3.731.373.927-9.277 3.732z"/><path fill="#292F33" d="M19 18.137c1.366.385 5.645-.007 6.802-.098 1.157-.09 1.594.451 0 1.25C24 20.19 20.188 22.45 19 22.914c-.998.391-4.5-1.211-4.917-1.696-.416-.486 3.745-3.411 4.917-3.081zM34 17c-1.549.04-3 0-4 0s-1.158 1.102 1.549 1.102S34 17 34 17z"/><path fill="#77B255" d="M3.736 16.958c0-1.465 4.456-5.134 3.975-4.476-1.15 1.573-.489 3.476 1.487 3.476S11.907 22.477 9 21c-2.907-1.477-5.264-3.323-5.264-4.042z"/><path fill="#CCD6DD" d="M8.606 10.569c.704.61.345 1.692-1.045 3.485-1.391 1.793-3.583 2.521-2.359.542s3.404-4.027 3.404-4.027z"/><path fill="#66757F" d="M10.529 17.368c-.19.476-.73.706-1.206.516l-.134-.054c-.476-.19-.707-.73-.516-1.206l.798-1.992c.19-.476.73-.707 1.206-.516l.135.054c.476.19.707.73.516 1.206l-.799 1.992z"/><path fill="#292F33" d="M12.911 13.991c.094.26-.04.546-.3.64l-1.881.679c-.26.094-.546-.041-.64-.301-.094-.26.04-.546.3-.64l1.881-.679c.26-.094.546.041.64.301z"/></g></svg>
AltText: motorcycle
Placement: before-question
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Items: [{"ref":"twemoji:1f3cd","name":"motorcycle","count":1,"role":"badge"}]

Rule: x - 4. Find the missing output.

Show answer

Answer: 6

Rule
x - 4
Table
  • {"input":5,"output":1,"blank":false}
  • {"input":1,"output":0,"blank":false}
  • {"input":10,"output":null,"blank":true}
  • {"input":12,"output":8,"blank":false}
Visual
Type: inline-svg
Svg: <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 44 44" width="44" height="44"><g transform="translate(4,4) scale(1)"><path fill="#939598" d="M0 34h36v2H0z"/><path fill="#231F20" d="M6 27h29v5H6z"/><circle fill="#58595B" cx="6.999" cy="32" r="3"/><circle fill="#58595B" cx="12.999" cy="32" r="3"/><circle fill="#A0041E" cx="6.999" cy="32" r="1.5"/><circle fill="#A0041E" cx="12.999" cy="32" r="1.5"/><path fill="#DD2E44" d="M5 33H1c-1 0-1.5-.5 0-2l4-4c1-1 2-2.001 2 0v4c0 2-.001 2-2 2z"/><path fill="#231F20" d="M8 20c0 3.313-1.343 6-3 6s-3-2.687-3-6c0-3.314 1.343-6 3-6s3 2.686 3 6z"/><path fill="#6D6E71" d="M11 15H7L5 7h8z"/><path fill="#414042" d="M26 25c0 1.104-.896 2-2 2H6c-1.104 0-2-.896-2-2V15c0-1.104.896-2 2-2h18c1.104 0 2 .896 2 2v10z"/><path fill="#C1694F" d="M13 26c0 .553-.448 1-1 1s-1-.447-1-1V13c0-.552.448-1 1-1s1 .448 1 1v13zm6 0c0 .553-.447 1-1 1-.553 0-1-.447-1-1V13c0-.552.447-1 1-1 .553 0 1 .448 1 1v13z"/><path fill="#808285" d="M36 26c0 .553-.447 1-1 1H7c-.552 0-1-.447-1-1 0-.553.448-1 1-1h28c.553 0 1 .447 1 1z"/><circle fill="#58595B" cx="29.999" cy="31" r="4"/><circle fill="#58595B" cx="21.999" cy="31" r="4"/><circle fill="#A0041E" cx="29.999" cy="31" r="2"/><circle fill="#A0041E" cx="21.999" cy="31" r="2"/><path fill="#414042" d="M12 3H6c-.552 0-1 .448-1 1v3h8V4c0-.552-.448-1-1-1z"/><path fill="#BE1931" d="M23 7h12v18H23z"/><path fill="#A0041E" d="M36 6c0 .552-.447 1-1 1H23c-.553 0-1-.448-1-1s.447-1 1-1h12c.553 0 1 .448 1 1z"/><path fill="#EA596E" d="M25 18h8v5h-8z"/><path fill="#F4900C" d="M30 32h-8c-.127 0-.253-.024-.371-.071L16.807 30H10c-.552 0-1-.447-1-1s.448-1 1-1h7c.128 0 .253.024.372.071L22.192 30H30c.553 0 1 .447 1 1s-.447 1-1 1z"/><path fill="#55ACEE" d="M33 10c0-.552-.447-1-1-1h-6c-.553 0-1 .448-1 1v5c0 .552.447 1 1 1h6c.553 0 1-.448 1-1v-5z"/></g></svg>
AltText: train
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Rule: x + 2. Find the missing output.

Show answer

Answer: 12

Rule
x + 2
Table
  • {"input":6,"output":8,"blank":false}
  • {"input":10,"output":12,"blank":false}
  • {"input":10,"output":null,"blank":true}
  • {"input":11,"output":13,"blank":false}

Rule: x + 3. Find the missing output.

Show answer

Answer: 4

Rule
x + 3
Table
  • {"input":3,"output":6,"blank":false}
  • {"input":11,"output":14,"blank":false}
  • {"input":1,"output":null,"blank":true}
  • {"input":12,"output":15,"blank":false}

Rule: x - 4. Find the missing output.

Show answer

Answer: 6

Rule
x - 4
Table
  • {"input":10,"output":6,"blank":false}
  • {"input":10,"output":null,"blank":true}
  • {"input":5,"output":1,"blank":false}
  • {"input":9,"output":5,"blank":false}
Visual
Type: inline-svg
Svg: <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 44 44" width="44" height="44"><g transform="translate(4,4) scale(1)"><path fill="#E1E8ED" d="M32 22s-2-8-5-8H16c-3 0-7 7-7 7s-8 1-8 5v2c0 .09.021.175.026.263C.417 28.605 0 29.251 0 30c0 1.104.896 2 2 2h30c2.209 0 4-1.791 4-4v-2c0-2.209-1.791-4-4-4z"/><path fill="#292F33" d="M1 26v2c0 .09.021.175.026.263C.417 28.605 0 29.251 0 30c0 1.104.896 2 2 2h30c2.209 0 4-1.791 4-4v-2c0-.348-.059-.679-.142-1H1.201c-.117.312-.201.641-.201 1z"/><path fill="#66757F" d="M15.91 32c.055-.326.09-.658.09-1 0-3.313-2.686-6-6-6-3.313 0-6 2.687-6 6 0 .342.035.674.09 1h11.82zm17 0c.055-.326.09-.658.09-1 0-3.313-2.687-6-6-6s-6 2.687-6 6c0 .342.035.674.09 1h11.82z"/><circle fill="#292F33" cx="10" cy="31" r="4"/><circle fill="#E1E8ED" cx="10" cy="31" r="2"/><circle fill="#292F33" cx="27" cy="31" r="4"/><circle fill="#E1E8ED" cx="27" cy="31" r="2"/><path fill="#DD2E44" d="M21 13c0 .552-.447 1-1 1h-3c-.552 0-1-.448-1-1s.448-1 1-1h3c.553 0 1 .448 1 1z"/><path fill="#55ACEE" d="M22 13c0 .552-.447 1-1 1h-2c-.552 0-1-.448-1-1s.448-1 1-1h2c.553 0 1 .448 1 1zm1 8h7s-2-5-3-5h-4v5zm-2-5h-5c-2 0-5 5-5 5h10v-5z"/></g></svg>
AltText: police car
Placement: before-question
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Type: asset-ref
EffectiveProvider: twemoji
RequestedProvider: twemoji
IconSize: 36
Layout: icon-badge
Placement: before-question
Items: [{"ref":"twemoji:1f693","name":"police-car","count":1,"role":"badge"}]

Rule: x + 5. Find the missing output.

Show answer

Answer: 16

Rule
x + 5
Table
  • {"input":7,"output":12,"blank":false}
  • {"input":11,"output":null,"blank":true}
  • {"input":12,"output":17,"blank":false}
  • {"input":8,"output":13,"blank":false}

Rule: x - 3. Find the missing output.

Show answer

Answer: 1

Rule
x - 3
Table
  • {"input":4,"output":1,"blank":false}
  • {"input":5,"output":2,"blank":false}
  • {"input":4,"output":null,"blank":true}
  • {"input":8,"output":5,"blank":false}
Visual
Type: inline-svg
Svg: <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 44 44" width="44" height="44"><g transform="translate(4,4) scale(1)"><path fill="#CCD6DD" d="M35 8H13c-.552 0-1 .448-1 1s.448 1 1 1h2v2h2v-2h2v2h2v-2h2v2h2v-2h2v2h2v-2h2v2h2v-2h2c.553 0 1-.448 1-1s-.447-1-1-1zm1 5c0 .552-.447 1-1 1H13c-.552 0-1-.448-1-1s.448-1 1-1h22c.553 0 1 .448 1 1z"/><path fill="#DD2E44" d="M32 14H14s.041-2-2.979-2H5.146C0 12 0 19.959 0 19.959V27c0 2.209 1.791 4 4 4h28c2.209 0 4-1.791 4-4v-9c0-2.209-1.791-4-4-4z"/><path fill="#F5F8FA" d="M2 22h32v3H2z"/><circle fill="#292F33" cx="7" cy="31" r="4"/><circle fill="#8899A6" cx="7" cy="31" r="2"/><circle fill="#292F33" cx="28" cy="31" r="4"/><circle fill="#8899A6" cx="28" cy="31" r="2"/><path fill="#55ACEE" d="M7 20H2s0-6 3-6h2v6zm5 0H9v-6h1c1 0 2 1 2 2v4z"/><path fill="#FFAC33" d="M8 11c0 .552-.448 1-1 1H5c-.552 0-1-.448-1-1s.448-1 1-1h2c.552 0 1 .448 1 1z"/><path fill="#3B88C3" d="M10 11c0 .552-.448 1-1 1H7c-.552 0-1-.448-1-1s.448-1 1-1h2c.552 0 1 .448 1 1z"/></g></svg>
AltText: fire truck
Placement: before-question
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EffectiveProvider: twemoji
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Items: [{"ref":"twemoji:1f692","name":"fire-truck","count":1,"role":"badge"}]
← More Arithmetic

Teaching Notes

Practice function machine addition with free easy printable worksheets. Uniquely generated — reinforce key math skills.

Frequently Asked Questions

How do I use this Function Machine Addition Easy Practice?

Print the worksheet and use it for independent practice, homework, or assessment. The included answer key allows for quick grading.

Is there an answer key?

Yes — the answer key is included and can be printed separately.

Workbook Detail

Function Machine Addition Easy — Set 5

Arithmetic B
easy Set 5 Form Exercise

Rule: x - 3. Find the missing output.

Show answer

Answer: 5

Rule
x - 3
Table
  • {"input":12,"output":9,"blank":false}
  • {"input":3,"output":0,"blank":false}
  • {"input":8,"output":null,"blank":true}
  • {"input":1,"output":0,"blank":false}
Visual
Type: inline-svg
Svg: <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 44 44" width="44" height="44"><g transform="translate(4,4) scale(1)"><path fill="#66757F" d="M30 23.828c-.391.392-1.023.392-1.414 0l-1.414-1.414c-.392-.391-.392-1.024 0-1.414L30 18.172c.391-.391 1.023-.391 1.414 0l1.414 1.414c.392.391.392 1.024 0 1.414L30 23.828zm-15-15c-.391.392-1.023.392-1.414 0l-1.414-1.414c-.392-.391-.392-1.023 0-1.414L15 3.172c.391-.391 1.023-.391 1.414 0l1.414 1.414c.392.391.392 1.023 0 1.414L15 8.828z"/><path fill="#55ACEE" d="M2 22c2 0 11 1 11 1s1 9 1 11-2 2-3 1-4-6-4-6-5-3-6-4-1-3 1-3zM4 6.039C7 6 29 7 29 7s.924 22 .962 25c.038 3-2.763 4.002-3.862.001S21 15 21 15 7.045 10.583 3.995 9.898C0 9 .999 6.077 4 6.039z"/><path fill="#CCD6DD" d="M27 3c2-2 7-3 8-2s0 6-2 8-19 18-19 18-6.5 4.5-8 3 3-8 3-8S25 5 27 3z"/><path fill="#66757F" d="M14 22s.5.5-4 5-5 4-5 4-.5-.5 4-5 5-4 5-4zM29 4c1.657 0 3 1.343 3 3h.805c.114-.315.195-.645.195-1 0-1.657-1.343-3-3-3-.355 0-.685.081-1 .195V4z"/></g></svg>
AltText: airplane
Placement: before-question
VisualToken
Type: asset-ref
EffectiveProvider: twemoji
RequestedProvider: twemoji
IconSize: 36
Layout: icon-badge
Placement: before-question
Items: [{"ref":"twemoji:2708","name":"airplane","count":1,"role":"badge"}]

Rule: x × 3. Find the missing output.

Show answer

Answer: 12

Rule
x × 3
Table
  • {"input":5,"output":15,"blank":false}
  • {"input":2,"output":6,"blank":false}
  • {"input":4,"output":null,"blank":true}
  • {"input":2,"output":6,"blank":false}

Rule: x + 2. Find the missing output.

Show answer

Answer: 6

Rule
x + 2
Table
  • {"input":3,"output":5,"blank":false}
  • {"input":2,"output":4,"blank":false}
  • {"input":5,"output":7,"blank":false}
  • {"input":4,"output":null,"blank":true}
Visual
Type: inline-svg
Svg: <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 44 44" width="44" height="44"><g transform="translate(4,4) scale(1)"><path fill="#66757F" d="M16.26 26h2v5h-2zm-8 0h2v5h-2z"/><ellipse fill="#99AAB5" cx="6.259" cy="3" rx="6" ry="1"/><ellipse fill="#99AAB5" cx="20.259" cy="3" rx="6" ry="1"/><path fill="#99AAB5" d="M12.26 3h2v6h-2z"/><ellipse fill="#66757F" cx="13.259" cy="3" rx="2" ry="1"/><path fill="#FFCC4D" d="M34.259 10c0-3 0-7-1-7s-3 4-4 6 5 1 5 1z"/><path fill="#FFCC4D" d="M34.259 10c0-2.209-8-3-19-3h-2C6.632 7 .509 12.451.509 18.25S4.259 28 13.259 28s12-4.701 12-10.5c0-.881-.138-1.731-.371-2.549C29.259 14 34.259 12.006 34.259 10z"/><path fill="#3B88C3" d="M4.259 13c-2.091 2.918-3.068 7.589 1.213 7.784 4.787.216 6.787.216 7.85-2.372 1.364-3.32.937-7.413-.276-8.195-2.32-1.497-6.695-.135-8.787 2.783zm16.841-.465C23.259 16 23.17 18.696 19.259 20c-3 1-4-2-3.841-5.535.112-2.483.206-4.195 1.841-4.465 1.447-.24 2.526.426 3.841 2.535z"/><path fill="#99AAB5" d="M31.441 7.114c.903 1.273 1.271 2.564.82 2.884-.45.32-1.548-.454-2.451-1.726-.903-1.273-1.271-2.564-.82-2.884.45-.321 1.547.453 2.451 1.726z"/><path fill="#99AAB5" d="M34.72 11.735c.909 1.279 1.28 2.575.83 2.894-.45.32-1.553-.458-2.46-1.737-.909-1.279-1.279-2.576-.829-2.896.45-.318 1.551.46 2.459 1.739z"/><path fill="#66757F" d="M33.076 9.419c.319.45.214 1.074-.236 1.394-.45.32-1.074.214-1.395-.236-.319-.45-.214-1.074.237-1.394.451-.321 1.075-.214 1.394.236z"/><path fill="#99AAB5" d="M25.26 32c0 1.104-.896 2-2 2h-20c-1.104 0-2-.896-2-2s.896-2 2-2h20c1.104 0 2 .896 2 2z"/></g></svg>
AltText: helicopter
Placement: before-question
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IconSize: 36
Layout: icon-badge
Placement: before-question
Items: [{"ref":"twemoji:1f681","name":"helicopter","count":1,"role":"badge"}]

Rule: x - 3. Find the missing output.

Show answer

Answer: 9

Rule
x - 3
Table
  • {"input":7,"output":4,"blank":false}
  • {"input":8,"output":5,"blank":false}
  • {"input":12,"output":null,"blank":true}
  • {"input":8,"output":5,"blank":false}
Visual
Type: inline-svg
Svg: <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 44 44" width="44" height="44"><g transform="translate(4,4) scale(1)"><path fill="#292F33" d="M16 0h4v5h-4z"/><path fill="#D1D3D4" d="M16 2h4v4h-4z"/><path fill="#A7A9AC" d="M18 2h2v4h-2z"/><path fill="#66757F" d="M18 19H5s1.355 8 4.875 14C13.394 39 18 33 18 33s4.606 6 8.125 0C29.645 27 31 19 31 19H18z"/><path fill="#99AAB5" d="M18 19H5s1.355 8 4.875 14C13.394 39 18 33 18 33V19z"/><path fill="#55ACEE" d="M0 30h36v6H0z"/><path fill="#E6E7E8" d="M30 9h-2.45l-.242-4H8.692l-.241 4H6v6h2.088l-.242 4h20.308l-.242-4H30z"/><path fill="#D1D3D4" d="M10 15h16v4H10z"/><path fill="#6D6E71" d="M8 11h20v2H8z"/><path fill="#BCBEC0" d="M10 7h16v2H10z"/><path fill="#BE1931" d="M5.913 23h24.174c.201-.747.368-1.427.5-2H5.413c.132.573.299 1.253.5 2z"/><path fill="#A0041E" d="M18 23h12.087c.201-.747.368-1.427.5-2H18v2z"/><path fill="#BCBEC0" d="M12 17h12v2H12z"/><path fill="#58595B" d="M16 0h2v2h-2z"/></g></svg>
AltText: ship
Placement: before-question
VisualToken
Type: asset-ref
EffectiveProvider: twemoji
RequestedProvider: twemoji
IconSize: 36
Layout: icon-badge
Placement: before-question
Items: [{"ref":"twemoji:1f6a2","name":"ship","count":1,"role":"badge"}]

Rule: x × 2. Find the missing output.

Show answer

Answer: 2

Rule
x × 2
Table
  • {"input":1,"output":null,"blank":true}
  • {"input":4,"output":8,"blank":false}
  • {"input":12,"output":24,"blank":false}
  • {"input":8,"output":16,"blank":false}

Rule: x × 3. Find the missing output.

Show answer

Answer: 21

Rule
x × 3
Table
  • {"input":1,"output":3,"blank":false}
  • {"input":2,"output":6,"blank":false}
  • {"input":7,"output":21,"blank":false}
  • {"input":7,"output":null,"blank":true}

Rule: x + 4. Find the missing output.

Show answer

Answer: 9

Rule
x + 4
Table
  • {"input":9,"output":13,"blank":false}
  • {"input":5,"output":9,"blank":false}
  • {"input":5,"output":null,"blank":true}
  • {"input":1,"output":5,"blank":false}

Rule: x - 3. Find the missing output.

Rule
x - 3
Table
  • {"input":4,"output":1,"blank":false}
  • {"input":1,"output":null,"blank":true}
  • {"input":11,"output":8,"blank":false}
  • {"input":11,"output":8,"blank":false}
Visual
Type: inline-svg
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AltText: steam train
Placement: before-question
VisualToken
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RequestedProvider: twemoji
IconSize: 36
Layout: icon-badge
Placement: before-question
Items: [{"ref":"twemoji:1f683","name":"steam-train","count":1,"role":"badge"}]
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Teaching Notes

Practice function machine addition with free printable worksheets. Uniquely generated — reinforce key math skills with every set.

Frequently Asked Questions

How do I use this Function Machine Addition Easy Worksheets worksheet?

Print the worksheet and complete the problems. Each set number generates a unique arrangement. Use the same set number for all students in a class for consistent assessment.

Is there an answer key?

Yes — every worksheet includes a complete answer key. Print it separately or view it on screen.