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Missing Addends Through 20 - Riddle Task Cards, Worksheets, and Activities
Missing Addends Through 20 - Riddle Task Cards, Worksheets, and Activities
Missing Addends Through 20 - Riddle Task Cards, Worksheets, and Activities
Missing Addends Through 20 - Riddle Task Cards, Worksheets, and Activities
Missing Addends Through 20 - Riddle Task Cards, Worksheets, and Activities
Missing Addends Through 20 - Riddle Task Cards, Worksheets, and Activities
Missing Addends Through 20 - Riddle Task Cards, Worksheets, and Activities
Missing Addends Through 20 - Riddle Task Cards, Worksheets, and Activities
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Description

Are you always on the lookout for ways to keep your students excited about math? This bundle of task cards and activities for practice with missing addends within 20 will have them begging for more... and mastering this tricky skill!

These resources can be purchased separately, but you'll save 20% when you buy them in this bundle!

What's included in this resource?

Missing Addends Within 20 Activities | Karate Theme

* 24 elimination riddle cards, printed four to a page

* The same riddles in full page format, easy to use on your digital devices

* A themed board game

* Student recording page and answer key

* A themed 120 chart for extra support

Missing Addends Within 20 Activities | Dog Theme

* 24 elimination riddle cards, printed four to a page

* A themed board game

* Student recording page and answer key

* A themed 120 chart for extra support

Missing Addends Within 20 Activities | Monkey Theme

* 24 riddle task cards, printed four to a page

* The same 24 riddles in a printable worksheet format (great for multiple
choice test prep, and for lessons on writing to explain your math thinking)

* Student recording page and answer key

* A themed 120 chart for extra support as needed

* A math center board game that uses all of the task cards

How can I use this with my class?

• Use the task cards in a math center for individual or partner work.

• Use with your document camera for whole class review or to focus attention at
the beginning of a math lesson.

• Use the cards as a skills review rotation (Read the Room or Scoot), individually or
with partners, with students moving to stations around the classroom to solve the
clues.

• Use the task cards or printable riddle pages for morning “bell ringers”.

• Use the task cards as exit tickets, or just cut apart the individual strips from the
printable pages.

• Use as challenge work or for early finishers.

• Use as models for your students to develop their own missing addend riddles.

• Use the writing pages to develop a math/writing connection. They're a good tool to
help students at all levels prepare to explain their thinking on standardized
tests.

• The printable pages are ideal for your substitute teacher folder or to send home
as make-up work for students who were absent.


Be sure to download the exclusive bundle bonus included with your purchase!

*****

Thank you for your interest in this resource! You’ll also like…

Missing Addends Part Part Whole One Page Games

*****

Be the first to know about my newest resources!

Click here to become a follower. You’ll get an email update whenever I post a new resource. You’ll also find an occasional “Followers Only” freebie in your TpT inbox, just to say thanks!☺

Linda Nelson

Primary Inspiration by Linda Nelson

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Reported resources will be reviewed by our team. Report this resource to let us know if this resource violates TPT's content guidelines.

Missing Addends Through 20 - Riddle Task Cards, Worksheets, and Activities

Rated 5 out of 5, based on 2 reviews
5.0 (2 ratings)
$10.20
$13.00
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$2.80

Highlights

Digital downloads
Grades icon
Grades
1st - 2nd
Standards icon
Standards
Pages
71 student pages
Answer Key
Included

Bonus

Missing Addends Game

Description

Are you always on the lookout for ways to keep your students excited about math? This bundle of task cards and activities for practice with missing addends within 20 will have them begging for more... and mastering this tricky skill!

These resources can be purchased separately, but you'll save 20% when you buy them in this bundle!

What's included in this resource?

Missing Addends Within 20 Activities | Karate Theme

* 24 elimination riddle cards, printed four to a page

* The same riddles in full page format, easy to use on your digital devices

* A themed board game

* Student recording page and answer key

* A themed 120 chart for extra support

Missing Addends Within 20 Activities | Dog Theme

* 24 elimination riddle cards, printed four to a page

* A themed board game

* Student recording page and answer key

* A themed 120 chart for extra support

Missing Addends Within 20 Activities | Monkey Theme

* 24 riddle task cards, printed four to a page

* The same 24 riddles in a printable worksheet format (great for multiple
choice test prep, and for lessons on writing to explain your math thinking)

* Student recording page and answer key

* A themed 120 chart for extra support as needed

* A math center board game that uses all of the task cards

How can I use this with my class?

• Use the task cards in a math center for individual or partner work.

• Use with your document camera for whole class review or to focus attention at
the beginning of a math lesson.

• Use the cards as a skills review rotation (Read the Room or Scoot), individually or
with partners, with students moving to stations around the classroom to solve the
clues.

• Use the task cards or printable riddle pages for morning “bell ringers”.

• Use the task cards as exit tickets, or just cut apart the individual strips from the
printable pages.

• Use as challenge work or for early finishers.

• Use as models for your students to develop their own missing addend riddles.

• Use the writing pages to develop a math/writing connection. They're a good tool to
help students at all levels prepare to explain their thinking on standardized
tests.

• The printable pages are ideal for your substitute teacher folder or to send home
as make-up work for students who were absent.


Be sure to download the exclusive bundle bonus included with your purchase!

*****

Thank you for your interest in this resource! You’ll also like…

Missing Addends Part Part Whole One Page Games

*****

Be the first to know about my newest resources!

Click here to become a follower. You’ll get an email update whenever I post a new resource. You’ll also find an occasional “Followers Only” freebie in your TpT inbox, just to say thanks!☺

Linda Nelson

Primary Inspiration by Linda Nelson

Report this resource to TPT
Reported resources will be reviewed by our team. Report this resource to let us know if this resource violates TPT's content guidelines.

Reviews

5.0
Rated 5 out of 5, based on 2 reviews
2
ratings
All verified TPT purchases
Mental Math It
Rated 5 out of 5
February 10, 2026
I LOVE these as brain warm ups for my class. They let students explore a deeper thinking process!
JoAnn O.
502 reviews • Kansas
Grades taught: 1st
Rated 5 out of 5
June 29, 2023
Unknown addends are the most confusing math concept we cover in our first grade curriculum. Many of my students struggle with it all year. These activities really help my students practice this tricky concept. THANK YOU!
Amy D.
610 reviews
Grades taught: 1st

Questions & Answers

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Standards

to see state-specific standards (only available in the US).
Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the number that makes 10 when added to 8.
Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = ▯ - 3, 6 + 6 = ▯.
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