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Learning Gym: Basic Math: Subtraction

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Basic Math: Subtraction

Click on the document below to print out a tracking sheet that will get you started on the Subtraction Unit.

Introduction

   

 

Concept/Skill Sample Learn Zillion Khan Academy Breakthrough to Math, Level 1, Book 3 Foundations Mathematics Number Power 1 Breakthrough to Math, Workbook WorkWise: Math at Work
What is subtraction? 7-5 means you have 7 and take 5 away to have 2 left  

Basic Subtraction

6-10 29     17
Introduction to Subtraction

 

Problem Solving

   

 

Concept/Skill Sample Learn Zillion Khan Academy Breakthrough to Math, Level 1, Book 6 Foundations Mathematics Number Power 1 Breakthrough to Math, Workbook WorkWise: Math at Work
Solving subtraction word problems If you had $123  but you spent $17, how much do you have left?   Subtraction Word Problems with 10 9-12 36-38 52-56  

20-21 Exercise 2

 

Calculations

 

 

 

Concept/Skill Sample Learn Zillion Khan Academy

Breakthrough to Math, Level 1, Book 3

Foundations Mathematics Number Power 1 Breakthrough to Math, Workbook WorkWise: Math at Work
Subtraction Facts within 10 8-3=5   Subtracting different ways 11-13    

28-29

(skip problems with numbers greater than 10)

 
Subtraction Facts within 20 13-6=7 Subtract within 20 by subtracting parts: Video Subtracting 14-6     35-36 30-32  
Subtracting 2-, 3-, and 4- digit numbers 379-51=228  

Subtracting 1, 10, or 100

14-23  

37-38

(Problems #1-10)

   
Subtracting 1s, 10s, or 100s
Borrowing 501-289=212 Solve subtraction problems: using regrouping: Video Worked example: Subtracting 3-digit numbers (regrouping) 24-56 32-34 39-42 37-42  
Concept/Skill Sample Learn Zillion Khan Academy

Breakthrough to Math, Level 1, Book 3

Foundations Mathematics Number Power 1 Breakthrough to Math, Workbook WorkWise: Math at Work

 

 

 

Problem Solving Post-Test

1. In the Breakthrough to Math, Level 1, Workbook, complete Worksheet 62 (p 64).  It is OK to use a calculator for this post-test.

2. Answers can be found on page 80.

3. A passing score is 8 out of 10.

Calculations Post-Test

In the Breakthrough to Math, Level 1, Book 3, complete the Post Test on page 60.  You may NOT use a calculator for this post-test.
2. Answers can be found on page 61.
3. A passing score is 10 out of 11.