Grade 5 Math quiz: Adding & subtracting fractions

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What this quiz should check

Topic: Adding and subtracting fractions with unlike denominators (5.NF.A.1). A good grade 5 quiz on this asks students to:

• Add and subtract fractions with unlike denominators by rewriting them as equivalent fractions with a common denominator
• Add and subtract mixed numbers, regrouping a whole when needed
• Solve word problems with fractions of the same whole (5.NF.A.2)
• Use benchmark fractions and number sense to check whether an answer is reasonable

Misconceptions worth a question

• Adding the numerators and the denominators (2/5 + 1/2 = 3/7)
• Changing the denominator without changing the numerator to match
• Regrouping a mixed number as 10 instead of one whole (for example 3 1/4 becoming 2 11/4)

Teacher tip: Use the standard's own example: ask why 2/5 + 1/2 can't be 3/7 (3/7 is less than 1/2). It catches the most common error in one item.

Always check the AI's answer key before you give the quiz to students.

Teach it first

Plan the lesson on the same standard: objective, practice, differentiation and an exit ticket.

Grade 5 Adding & subtracting fractions lesson plan prompt →