Math Games

Grade 7 - Number

Standard 7.N.5 - Solve fraction subtraction word problems.

Included Skills:

Develop and demonstrate an understanding of adding and subtracting positive fractions and mixed numbers, with like and unlike denominators, concretely, pictorially, and symbolically (limited to positive sums and differences).
• Estimate the sum or difference of positive fractions and/or mixed numbers and explain the reasoning.
• Model addition and subtraction of positive fractions and/or mixed numbers using concrete or visual representations, and record the process used symbolically.
• Determine the sum or difference of two positive fractions or mixed numbers with like denominators and explain the strategy used.
• Explain how common denominators for fractions and/or mixed numbers and factors are related.
• Explain how a common denominator can help when adding fractions and/or mixed numbers.
• Determine the sum or difference of two positive fractions or mixed numbers with unlike denominators and explain the strategy used.
• Simplify a positive fraction or mixed number by identifying and dividing off the common factor between the numerator and denominator.
• Generalize and explain personal strategies for determining the sum or difference of positive fractions and/or mixed numbers.
• Solve a problem involving the addition or subtraction of positive fractions or mixed numbers.
• Explain how the sum or difference of positive fractions and/or mixed numbers can be represented symbolically in different ways.