Rounding to the Nearest 10 and 100

Name: Rounding to the Nearest 10 and 100 | Mystery Detective Worksheets | Grades 2–4 | Christmas Theme
Brand: Kiwiland Education
SKU: 8830695
Price: 4.0 USD
Availability: InStock

Mystery Detective Worksheets · Grades 2–4 · Christmas Theme

2nd grade math3rd grade mathGrade 2Grade 3Grade 4Answer keys included

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Inside the case file

Christmas rounding worksheets for 3rd grade and 4th grade: six December cases of rounding to the nearest 10 and 100, where each rounded number crosses a classmate, a person or a place off the clue list. Three cases round to the nearest 10 and three to the nearest 100, so the pack covers the whole standard, and a number rounded the wrong way matches no clue. Print and go with full answer keys: no prep math centers, morning work, early finishers, homework and sub plans, six Mystery Detective cases of math in one download.

Rounding is taught in a fortnight and then quietly forgotten, and the last weeks of December are exactly when it needs a run, because a stolen pile of presents and a gingerbread thief will get a third grade class through six pages of it. One case a day covers the fortnight before the break, and the answer keys keep the marking short. Every CSI Mini Mystery Detective math page checks itself.

The Cases

Missing Xmas Presents - the school lot has gone
Who Ate The Gingerbread - a classmate got there first
Secret Santa - a gift and no name on it
Teachers Xmas Present - a parcel nobody can explain
Christmas Fruitcake - somebody baked for everyone
Who Ate The Xmas Cookie - it happened again

What's Inside

Six Christmas cases, three on the nearest 10 and three on the nearest 100
A clue list beside the questions, so one answer removes one name
A red-ink answer key for all six cases
Six separate Christmas stories, so no two pages read the same
Sized for one class period a case
Print and go: no cutting, no laminating, nothing to prepare

What Is a CSI Mini Mystery Detective?

A CSI Mini Mystery Detective is a printable case: one crime, one short clue list, and the questions that rule the clues out. Each clue carries a number, the rounding produces those numbers, and a match crosses that clue off until one name is left. Round to the wrong place and nothing matches, which is what makes the page mark itself.

When to Use This Resource

December is where this one belongs, in the fortnight before the break when a plain page of numbers will not hold a class. It also does a real job in the new year, because rounding is among the first things to go rusty over a holiday. The six cases split neatly into two sets of three, so you can hand out the nearest 10 group first and keep the nearest 100 group for the following week.

Use it for morning work, math centers, early finishers, homework, test prep, sub plans and homeschool lessons, with a whole class, a small group or one student.

Grade Levels

Written for 3rd grade and 4th grade. Third graders meet rounding to 10 and 100 here, and fourth graders use the same six cases as a refresher before rounding to larger places.

Why Teachers Love These Cases

Both rounding places covered in one download
No preparation in the month that has none to spare
Six cases is more than a week of morning work
Works with a whole class, a small group, partners or one student

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