Halloween 100s Chart Addition & Subtraction Mystery Picture

Adding and subtracting within 100 takes practice, especially when students are still developing number sense and learning to use a hundred chart. I created this Halloween-themed Math activity to give students a fun way to practice these skills while discovering a mystery picture.

In this color by code activity, students solve addition and subtraction problems, find their answers on a 100 chart, and color the corresponding numbers using the given color code. As they work through the problems, a spooky ghost gradually appears!

What's Included?

• 100 chart addition and subtraction color by code activity

• A variety of addition and subtraction problems within 100

• Questions involving 10 more and 10 less

• Number patterns and number relationships practice

• A Halloween ghost mystery picture reveal

Skills Students Will Practice

• Adding and subtracting within 100

• Adding and subtracting 10

• Finding 10 more and 10 less

• Understanding number patterns and relationships

• Using a hundred chart to solve math problems

• Building number sense and accuracy

Suitable For

• 1st Grade Math

• 2nd Grade Math

• Advanced Kindergarten students

Ways to Use This Activity

This no-prep printable can be used for math centers, independent practice, morning work, early finishers, small-group instruction, math intervention, homework, and homeschool lessons.

It also makes a fun addition to your October and Fall season/Halloween Math activities!

Why I Created This Activity

I wanted to make addition and subtraction practice a little more interesting for young learners. Instead of simply solving equations on a worksheet, students get to use a 100 chart and watch a hidden picture appear as they work.

This activity gives students an opportunity to practice important math skills while enjoying a little Halloween fun. It can be used by classroom teachers, homeschoolers, and parents looking for additional math practice.

Common Core State Standards

CCSS 1.NBT.C.5: Given a two-digit number, mentally find 10 more or 10 less than the number.

CCSS 2.NBT.B.5: Fluently add and subtract within 100 using strategies based on place value and properties of operations.

CCSS 2.NBT.B.8: Mentally add and subtract 10 or 100 to a given number.