Comparing numbers worksheets for 3rd grade and 4th grade, with comparing multi-digit numbers, greatest and least of three, and expanded form all in one no prep CSI Mini Mystery Detective math pack. There are ten printable cases with a soccer theme. These place value math activities fit math centers, morning work, homework and early finishers, and every case has an answer key.
Use this pack in your place value unit when your class starts comparing numbers. Students match each answer to a suspect's badge and cross the name off, and each page is self-checking. The numbers in each problem share the same digits, which means students have to compare place by place.
What's Inside
- Ten one-page detective cases on comparing multi-digit numbers, each with an answer key
- Four 3rd grade cases with 3- and 4-digit numbers, including greatest of three
- Six 4th grade cases with 5- and 6-digit numbers, expanded form and a mixed review case
- A reference page with a worked example for every skill
- A contents page, teacher instructions, a detective case log and a certificate of achievement
- 30 black and white pages, ready to print
The Cases
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The Missing Match Ball - the greater of two 4-digit numbers
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The Stolen Tickets - the lesser of two 4-digit numbers
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The Double Red Card - 3- and 4-digit numbers with zeros
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The Frozen Clock - greatest of three 4-digit numbers
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The Mystery Whistle - the lesser of two 5-digit numbers
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The Swapped Shirts - the greater of two 6-digit numbers
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The Flooded Field - least of three 5-digit numbers
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The Empty Trophy Case - expanded form against standard form
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The Corner Flag Caper - expanded form with the parts mixed up
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The Hole in the Net - every comparing skill, mixed
When to Use This Resource
The cases start with two 4-digit numbers, then zeros and numbers with different digit counts, then three numbers at once, and then the same ideas with 5- and 6-digit numbers and expanded form. A 3rd grade class can work through the first four cases and stop there, while a 4th grade class can use them as a quick warm-up before the bigger numbers. The final mixed case works as a check at the end of the unit. Every case stands on its own. It also works for guided math groups, bell ringers, test prep, sub days, homeschool and back to school place value review.
Grade Levels
Cases 1-4 are written for 3rd grade, with numbers up to 9,999. Cases 5-10 are written for 4th grade, with 5- and 6-digit numbers and expanded form, so the whole pack also works as a 4th grade beginning of the year review or extension work for a strong 3rd grade class.
Why Teachers Love Mystery Detectives
- No prep. Print and hand out.
- Each correct answer crosses off one suspect
- Greater, lesser, greatest, least and expanded form together in one comparing numbers pack
- A soccer Cup Final story across all ten cases
- Prints clean in black and white
Want more cases like these?
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