3-Digit Addition & Subtraction

Name: 3-Digit Addition & Subtraction | Mystery Detective Worksheets | Grades 2–5 | Halloween
Brand: Kiwiland Education
SKU: 4938843
Price: 4.0 USD
Availability: InStock

Mystery Detective Worksheets · Grades 2–5 · Halloween

2nd grade math3rd Grade Math4th Grade4th Grade Math5th Grade MathGrade 2Grade 3Grade 4Grade 5Answer keys included

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Self-checkingEvery right answer clears a suspect. A wrong answer matches nobody.

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Inside the case file

Halloween 3 digit addition and subtraction worksheets for 2nd grade and 3rd grade: five Halloween math cases, each a Mystery Detective page with carrying and borrowing across the columns. Print and go with full answer keys, no prep, for October morning work, math centers, early finishers, homework and sub plans. Halloween math for 2nd grade and 3rd grade with 3 digit addition and subtraction with regrouping on the same page, so both skills get a workout in the week of the costume parade. It is October math for math centers, morning work or homework, and every CSI Mini Mystery Detective page is self-marking.

A witch has turned the teacher into a toad, and that is enough to get a second grade class through mixed addition and subtraction with regrouping in the week of the costume parade. All five sheets are self-marking. Each CSI Mini Mystery Detective math case fits a morning work slot.

A witch has turned the teacher into a toad and a classmate into a cat, and nobody knows who's under the costume. Students add or subtract each problem, then cross off the matching clue. The page mixes both operations, so they have to watch the sign.

The Cases

Teacher Toad - the teacher turned into a toad
Trick or Treat Teacher - who surprised the teacher
Cat Friend - a friend turned into a cat
Under the Costume - who is in the costume
Costume Competition - who won the competition

What's Inside

Five Halloween cases
3 digit addition and subtraction with regrouping
Black and white copies
Answer keys
Teacher instructions

What Is a CSI Mini Mystery Detective?

Each case is one page with a Halloween story, the problems and clue lists. Clues have numbers. Students cross off the ones that match, and what's left solves the case.

When to Use This Resource

Use these in October, around Halloween. They also work as mixed addition and subtraction review later in the year. Teachers use them as homework, with small groups, on sub days and at class parties.

Grade Levels

Written for 2nd grade and 3rd grade. 3rd graders can use it as October review.

Why Teachers Love These Cases

Halloween stories kids will like
Addition and subtraction together
Print and go
Five separate cases

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