Your students will love the fun of solving riddles for unknown numbers in addition equations! These easy prep riddle task cards plus printables are a great way to practice solving for a missing addend for sums within 20.

How these riddles work:

Choosing from four numbers on each card, your students will solve for the missing addends to eliminate three of the options. With each riddle they complete, your students will solve three missing addend number models by adding on or by subtraction– that’s 72 in all! Computation + mental math + critical thinking!

What you'll receive:

→ 24 riddle task cards, printing at four per page

→ A page for your students to write the answers to the riddles

→ 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)

→ An answer key

→ A themed 120 chart for extra support as needed

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

→ A ten-question self-correcting Easel assessment

This resource is appropriate for use by first graders, second graders, or students at any grade level that need a little boost in the skill of solving for missing addends. It can be used in the school or homeschool setting, and is ideal for RTI or other math interventions.

Here are some ways that you might use these resources in your classroom:

• 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.

Here's what teachers like you said...

⭐⭐⭐⭐⭐ Lindsey S. said, "Loved this resource. Loved the puzzle aspect and how they had to solve multiple problems to really just solve one box. Mwahaha loved it! " (from another fan of sneaky learning... like me! :) )

⭐⭐⭐⭐⭐ Nancy J. said, "My struggling math kids loved these - finally I didn’t hear I hate math."

⭐⭐⭐⭐⭐ Dianne L. said, "Great for working on students mental math skills. My students really enjoy this!"

⭐⭐⭐⭐⭐Ashley G. says, "... These are just perfect for our math rotation time."

⭐⭐⭐⭐⭐Teresa D. says, "Thank you! This was a perfect activity to practice this skill with my summer school students. The format really makes them slow down and check their computation."

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Linda Nelson grants permission to the original downloader to reproduce material for his or her own classroom use only. No other part of this work may be reproduced in whole or in part by electronic or mechanical means including information storage and retrieval systems without permission in writing from the author.

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Linda Nelson

Copyright © Primary Inspiration by Linda Nelson

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