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Common Core Standard 5.NF.A.2 Questions

Solve word problems involving addition and subtraction of fractions referring to the same whole, including cases of unlike denominators, e.g., by using visual fraction models or equations to represent the problem. Use benchmark fractions and number sense of fractions to estimate mentally and assess the reasonableness of answers. For example, recognize an incorrect result 2/5 + 1/2 = 3/7, by observing that 3/7 < 1/2.

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Grade 5 Fractions and Ratios CCSS: 5.NF.A.2
Grade 5 Mixed Numbers CCSS: 5.NF.A.2
Grade 5 Mixed Numbers CCSS: 5.NF.A.2
Grade 5 Fractions and Ratios CCSS: 5.NF.A.2, MP2, MP7
A bird watcher observes a bird flying at a height of 610 kilometer. The bird dives down toward the ground then continues flying at a height 25 kilometer below its original height.

The bird watcher states that the bird is now flying at a height of 45 kilometer.

Which TWO statements are true?
  1. Since 610 minus 25 is 45, the height is reasonable.
  2. Since 45 is greater than 610, the height is not reasonable.
  3. The fraction 25 is 410, and 410 equals 45, so the height is reasonable.
  4. The fraction 25 is 410, and 610 minus 410 does not equal 45, so the height is not reasonable.
  5. The fraction 25 is 410, and 610 plus 410 is less than 45, so the height is not reasonable.
Grade 5 Fractions and Ratios CCSS: 5.NF.A.2, MP4

This question is a part of a group with common instructions. View group »

Grade 5 Fractions and Ratios CCSS: 5.NF.A.2, MP1

This question is a part of a group with common instructions. View group »

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