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Grade 7:  The Learning Equation Math

12.05 Subtracting Integers

 Number Operations Refresher pp 32-3
Learning Objectives:

The student will:

• subtract integers concretely, pictorially, and symbolically.

Drag the appropiate number of tiles to each side of the - sign to model the question. When your model matches the question, move all of the tiles to the left of the - sign. Notice what happens to the tiles as they move across the - sign. If you have yellow and red tiles, try placing a red tile on top of the yellow tile to show a zero pair. Repeat with all of the zero pairs to see the integer sum modelled by each set of tiles.

 Subtracting Integers Explanation 4 - 3 = 1 6 - 5 = 1 3 - 4 = -1 5 - 6 = -1 -4 - -3 = -1 -7 - -6 = -1 -3 - -4 = 1 -6 - -7 = 1 4 - -3 = 7 6 - -5 = 11 3 - -4 = 7 5 - -6 = 11 -4 - 3 = -7 -7 - 6 = -13 -3 - 4 = -7 -6 - 7 = -11
 Subtracting Integers Range -10 to 10 -100 to 100 Hold down Shift and click the Reload button on your browser to try again. source:  Subtraction 2

Subtracting Integer Calculations

You can calculate integer differences on a scientific calculator.  Use this calculator to check the chart on the right and learn the patterns, then try it out for yourself..

Press Reload/Refresh if the calculator does not show properly.

 Product/ Quotient Calculator Input Standard Name 8 - 4 8 4 4 -8 - 4 8 4 -12 8 - -4 8 4 12 -8 - -4 8 4 -4 4 - 8 4 8 -4 -4 - 8 4 8 -12 4 - -8 4 8 12 -4 - -8 4 8 4

Review:

A+ Math Flash Cards - Choose subtracting only

Lesson on Operations with Integers

Enrichment:

 Key Terms: A-E F-J K-O P-R S-Z

integer, positive, negative, signed number, magnitude, direction, minuend, subtrahend, difference, zero model

Prerequisite Skills:

Introduction to Integers: Grade 7 Lesson 11.09

Introduction to Integers:  Grade 7 Lesson 11.09

Introduction to Integers:  Grade 7 Lesson 11.09

Introduction to Integers:  Grade 7 Lesson 11.09

Introduction to Integers:  Grade 7 Lesson 11.09