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Grade 8:  The Learning Equation Math

12.08 Adding and Subtracting Rational Numbers

The student will:

• estimate, compute, and verify the sums and differences of rational numbers, using only decimal representations of negative rationals.

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Key Terms:

rational number, sum, difference, addend, inverse operation, least common multiple

Wordsearch 12.06 - 12.11

• Add, and subtract fractions concretely, pictorially, and symbolically.

Adding Fractions:  Grade 8 Lesson 12.03

Subtracting Fractions: Grade 8 Lesson 12.04

• Define, compare, and order any rational numbers.

Introduction to Integers:  Grade 7 Lesson 11.09

• Add and subtract integers concretely, pictorially, and symbolically.

Adding Integers:   Grade 7 Lesson 12.04

Subtracting Integers:  Grade 7 Lesson 12.05

• Convert mentally and on paper, between positive and negative fractions and decimals, including improper fractions and repeating decimals (single repeating digit).

Mental Mathematics:   Grade 7 Lesson 12.10

Fraction Conversions:   Grade 7 Lesson 11.05

Decimal Conversions:   Grade 7 Lesson 11.06

 

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Comments to:  Jim Reed

Started September, 1998. Copyright © 1999, 2000

visitors since September 3, 2000