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Add a challenge for your young mathematicians' adventures in double-digit addition. Instead of simply computing sums in the 9 problems, they work backwards to fill in blanks among the addends. Resource makes a terrific extension or alternative way to assess the mastery of your non-linear thinkers. Graphic boxes provide space to note regrouping in the tens place.

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Resource Details

K - 2nd
Arithmetic & Pre-Algebra
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