Lesson Plan
Better Lesson

Better Lesson: Missing Numbers

For Teachers 1st Standards
SWBAT identify patterns on a hundreds chart. SWBAT use patterns and structure of the hundreds chart to identify missing numbers.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Adding and Subtracting Missing Number

For Students 4th - 5th
[Free Registration/Login may be required to access all resource tools.] The resource is a video showing students how to find a missing number in a multi-step addition and subtraction problem using inverse operations. Adaptive practice...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Adding, Subtracting, and Multiplying Missing Number

For Students 4th - 5th Standards
[Free Registration/Login may be required to access all resource tools.] A learning module where students must apply the order of operations to find the missing numbers in equations involving addition, subtraction, and multiplication. A...
Activity
Soft Schools

Soft Schools: Order of Operations Quiz

For Students 9th - 10th
This is a ten-question, multiple-choice quiz that tests students knowledge of order of operations. A results summary is given at the end of the quiz, and students may revisit and review problems they missed.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Add, Subtract, and Multiply With Parentheses Missing Number

For Students 4th - 5th
[Free Registration/Login may be required to access all resource tools.] This is a video and practice problems demonstrate finding missing numbers using order of operations and working backwards. Operations include addition, subtraction,...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Adding and Subtracting With Parentheses

For Students 4th - 5th
[Free Registration/Login may be required to access all resource tools.] The resource includes a video tutorial on how to find a missing number in a multi-operational problem by working backwards. The video is followed by practice...
Website
Primary Resources

Primary Resources: Basic Addition and Subtraction

For Teachers Pre-K - 1st
An extensive collection of teacher resources to help in teaching and reviewing the concepts of basic addition and subtraction. There are many worksheets, activities, PowerPoint presentations, smartboard activities, Word, Excel, and pdf...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Add and Subtract to 100 Mixed Operations and Word Problems

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] This is a set of practice problems where students solve addition and subtraction problems in order to determine missing numbers to keep the equation balanced. When...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Filling in the Missing or Sign Numbers to 1000

For Students 2nd - 4th
[Free Registration/Login may be required to access all resource tools.] The video works through a 3-digit addition problem to determine if the correct operation for the number sentence is addition or subtraction. The video is followed by...
Activity
Math Slice

Math Slice: Math Crossword Slice Special Test

For Students Pre-K - 1st Standards
Use this interactive math crossword puzzle to build number sense skills. Simply fill in the missing numbers based on the operation. Immediate feedback given to responses.
Activity
Scholastic

Scholastic: Math Maven's Mysteries: The Cuckoo Caper

For Students 3rd - 8th
The famous Clockenheimer Cuckoo is missing from Clockenheimer Clocks on Main Street! Help Math Maven get it back by solving a math riddle.
Activity
Scholastic

Scholastic: Math Maven's Mysteries: The Case of the Hatcher Hotel Heist

For Students K - 1st Standards
Help Math Maven solve this mystery! Items are missing from several hotel rooms, but some addition and subtraction clues have been left behind. Use your skills to figure out where the thief will strike next!
Activity
Wolfram Research

Wolfram Math World: Addition

For Students 6th - 8th Standards
MathWorld provides a detailed definition of addition.