4.NF.3

Understand a fraction a/b with a > 1 as a sum of fractions 1/b. a. Understand addition and subtraction of fractions as joining and separating parts referring to the same whole.

Lesson 4.NF.3

Concepts addressed:

• Understand addition and subtraction of fractions

• Recognize that adding and subtracting are just manipulating pieces out of the same whole

• Decompose fractions as a sum of fractions Ex. 3/8 = 1/8 + 1/8 + 1/8; 3/8 = 1/8 + 2/8; 2 1/8 = 1 + 1 + 1/8 = 8/8 + 8/8 + 1/8. c

• Add and subtract mixed numbers with denominators, e.g., by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction.

• Solve word problems involving addition and subtraction of fractions referring to the same whole and having like denominators, Ex., by using visual fraction models and equations to represent the problem

Key terms for this lesson:

• Equivalence - two things or parts being equal

• Equivalent Fractions - two fractions that are representing the same part of a whole

• Denominator - the whole that the fraction is out of

• Numerator - the parts out of the whole

Adding fractions!

This worksheet went over:

Additional practice:

• 4.NF.3 IXL

• 4.NF.3 IXL

• 4.NF.3 IXL

• 4.NF.3 IXL

• 4.NF.3 IXL

• 4.NF.3 IXL

• 4.NF.3 Khan Academy

• 4.NF.3 Khan Academy

• 4.NF.3 Khan Academy

• 4.NF.3 Khan Academy

Lesson Complete!