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Common Core Standards

Multiply by Fractions

Grade: 4th Grade
Standard:

Math.4.NF.4a or 4.NF.B.4.A

Description:

Understand a fraction a/b as a multiple of 1/b. For example, use a visual fraction model to represent 5/4 as the product 5 × (1/4), recording the conclusion by the equation 5/4 = 5 × (1/4).

Standard:

Math.4.NF.4b or 4.NF.B.4.B

Description:

Understand a multiple of a/b as a multiple of 1/b, and use this understanding to multiply a fraction by a whole number. For example, use a visual fraction model to express 3 × (2/5) as 6 × (1/5), recognizing this product as 6/5. (In general, n × (a/b) = (n × a)/b.)

Standard:

Math.4.NF.4c or 4.NF.B.4.C

Description:

Solve word problems involving multiplication of a fraction by a whole number, e.g., by using visual fraction models and equations to represent the problem. For example, if each person at a party will eat 3/8 of a pound of roast beef, and there will be 5 people at the party, how many pounds of roast beef will be needed? Between what two whole numbers does your answer lie?

4th Grade Math - Multiply by Fractions Lesson
 
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