Florida B.E.S.T. MA.4.AR.1.3
The Standard
Solve real-world problems involving multiplication of a fraction by a whole number or a whole number by a fraction.
Florida B.E.S.T. Standards for Mathematics
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students decide when a real-world situation calls for multiplying a fraction and a whole number. They represent the situation with an equation or visual model, calculate the product, and label the answer.
What Mastery Looks Like
- Students solve one-step situations involving equal groups of a fraction or a fractional part of a whole-number amount. They use a model or equation and express products greater than one as fractions or mixed numbers.
Common Misconceptions
- Students may multiply both the numerator and denominator by the whole number, such as writing 3 × 1/4 = 3/12. They may also add instead of multiply or ignore what the product means in the problem.
How to Assess It
- Use this exit ticket: “Each batch of muffins needs 3/4 cup of milk. How much milk is needed for 5 batches?” Ask for an equation, model, and labeled answer.
Lesson moves
Ways to Teach It
Give students fraction strips to build five groups of 2/3, combine the pieces, and record the product as a fraction and mixed number.
Ask students to respond to: “Maya says 4 × 2/5 = 8/20.” Explain her error using words and a model.
Students draw a whole-number card and fraction card, multiply them, then earn a point by matching the product to a model card.
Give pairs a recipe using 2/3 cup of oats per batch and have them calculate amounts for three, four, and six batches.
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Printable MA.4.AR.1.3 Worksheet
A ready-to-print activity worksheet aligned to MA.4.AR.1.3, with an answer key for the teacher on its own page. No account needed.
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Related Standards
- MA.4.AR.1.2
Solve real-world problems involving addition and subtraction of fractions with like denominators, including mixed numbers and fractions greater than one.
- MA.4.AR.1.1
Solve real-world problems involving multiplication and division of whole numbers including problems in which remainders must be interpreted within the context.
- MA.5.AR.1.2
Solve real-world problems involving the addition, subtraction or multiplication of fractions, including mixed numbers and fractions greater than 1.
- MA.5.AR.1.3
Solve real-world problems involving division of a unit fraction by a whole number and a whole number by a unit fraction.
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