Easter 3 Digit Addition with Regrouping Mystery Detective Activity Worksheets

Inside the case file

Easter 3 digit addition with regrouping worksheets for 2nd grade and 3rd grade, five spring math activities with a Mystery Detective case on every page. No prep, print and go, full answer keys, for math centers, morning work, early finishers, homework and sub plans in the run up to the April break. A staffroom egg goes missing, song words get changed and bunny baskets are swapped around, sixteen column sums a case, and each correct total crosses a suspect off until one is left holding the eggs, while a carrying slip matches no clue at all, so the CSI Mini Mystery Detective pack sends them back to the sum before it reaches your marking pile.

The fortnight before Easter is made for a hunt, and column addition with a missing egg at the end of it is the practice a class keeps asking for. These cases hold a room together because there is something to find out, and the regrouping is unchanged underneath the eggs. Easter math with a Mystery Detective finish, marked in minutes from the key.

The Cases

• Teachers Easter Egg - an egg has gone missing from the staffroom
• Easter Songs - working out who changed the words
• Easter Mindfulness and Kindness - a quieter case about who helped
• Easter Bunny Baskets - baskets have been swapped around
• Easter Egg Surprise - what was hidden inside, and by whom

What's Inside

• Five Easter case files, sixteen addition problems on each
• Three digit addition with regrouping throughout
• Answer keys for all five cases
• A teacher instruction page - print and go, nothing to prepare
• Suspect and clue lists printed on the same page as the problems
• One download, ready to print the moment it opens

What Is a CSI Mini Mystery Detective?

One printed page holding one crime and the clue lists that solve it. Each clue has a number beside it, the sixteen sums on the page produce those numbers, and a correct total knocks a clue out. Work to the last question and a single suspect is left. Forget to carry and nothing matches, which sends a student back over their own work.

When to Use This Resource

This is built for the run up to Easter, when three digit addition has been taught and needs keeping warm rather than introducing. It works as a Spring Break review pack, as homework for the week before the holiday, and as something to leave for a substitute in a fortnight when nobody is concentrating. Use it in math centers, for morning work, with early finishers, for homework, in sub plans and in homeschool lessons, with a whole class, a small group or one student.

Grade Levels

Written for 2nd grade, 3rd grade and 4th grade. Fourth graders who still lose track of the carry find the self-checking clue lists useful, and a confident first grader can manage with a number line to hand.

Why Teachers Love These Cases

• A wrong total matches no clue, so students mark themselves
• Five cases covers the whole week before the break
• Seasonal without being babyish, so older students still play along
• Print and go on the morning you need it

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