Adding and Subtracting Fractions Part 1

What is the sum of these fractions?

• 4/5
• 3/20
• 17/20
• 4/20

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Is this a correct answer?

• Yes, the student correctly added.
• No, you cannot add unlike denominators
• No, 5 + 7 is not 12
• No, 2 + 3 is not 5

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

¹/₃ + ¹/₉

• ²/₉

• ⁴/₉

• ²/₁₂

• ³/₉

²/₅ - ¹/₅

• ¹/₅

• ¹/₀

• ³/₁₀

• ³/₅

⁴/₇ + ¹⁰/₇

• ¹⁴/₁₄

• ⁶/₇

• ¹⁴/₇

• ¹²/₁₂

What number could be a common denominator for these two fractions?

³/₁₀ and ¹/₅

• 5

• 10

• 15

• These numbers do not have a common denominator

2 ²/₃ - 1 ¹/_{3 =}

• 1
• 1 ¹/₃
• 1 2/₃
• ¹/₃

4 ¹/₃ + 2 ¹/₃

• 6 ¹/₃

• 6 ²/₃

• 6 ²/₆

• 7 ²/₃

4 - 3 ²/₆

• 1 ⁴/₆

• 7 ²/₆

• ²/₃

• 4

What is the least common denominator you could use to subtract ¹/₃ and ¹/₄?

• 3

• 4

• 7

• 12