Sometimes it's tough to decide whether to regroup or not regroup when you're adding two-digit numbers! This challenging set of 24 task cards will strengthen your students’ skills in making that decision!

Here's how these task card riddle activities work!

On each card, there is a grid of numbers with four possible answers. Your students use math skills to eliminate numbers until only one is left - the secret number! Solving these takes lots of critical thinking, attention to detail, and mental math!

With each card they complete, your students will solve three addition number equations, some with regrouping and others without regrouping – that’s 72 in all!

Here's what's included in this two-digit addition resource!

☛ 24 riddle cards, printing at four per page

☛ A page for students to record their answers

☛ Answer key

☛ Themed 120 chart for support and easy differentiation

☛ Easy-prep one page board game to practice the same skills

Here are some ways that you might use these addition task cards in your classroom!

* Use 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 as a skills review rotation, AKA Scoot, individually or with partners, with

students moving to stations around the classroom to solve the clues

* Use for morning “bell ringers”

* Use as exit tickets

* Use as challenge work or for early finishers

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Are you ready to build a collection of math riddles that will take you through a year of second grade math? You'll save over 40% when you buy this riddle set in this bundle of nearly 500 math riddles! Click here to see it!

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Linda Nelson

Copyright © Primary Inspiration by Linda Nelson

Permission to copy for single classroom use only.

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