4.MATH.3.F
Evaluate the reasonableness of sums and differences of fractions using benchmark fractions 0, 1/4, 1/2, 3/4, and 1, referring to the same whole.
Grade 4 · Texas Essential Knowledge and Skills (TEKS) · TEKS 2012
Standard Unwrapping
AI-generated as a starting point — sign in to edit.Vocabulary
reasonablenesssumsdifferencesfractionsbenchmark fractions01/41/23/4whole
Skills
- evaluate (the reasonableness of sums and differences of fractions) #dok3
- use (benchmark fractions 0, 1/4, 1/2, 3/4 referring to the same whole) #dok2
Learning Targets
- I can identify benchmark fractions such as 0, 1/4, 1/2, and 3/4. #dok1
- I can explain what benchmark fractions represent when comparing other fractions. #dok2
- I can use benchmark fractions to estimate whether my answer to a fraction addition or subtraction problem makes sense. #dok2
- I can evaluate the reasonableness of sums and differences of fractions using benchmark fractions and referring to the same whole. #dok3
Big Ideas
- Benchmark fractions like 0, 1/4, 1/2, and 3/4 help us make sense of addition and subtraction of fractions.
- Checking the reasonableness of an answer using benchmark fractions supports accurate problem solving with fractions.
Essential Questions
- What are benchmark fractions and how are they useful?
- How can you use benchmark fractions to check if your sum or difference of fractions is reasonable?
- Why is it important to refer to the same whole when evaluating sums and differences of fractions?
- When might your answer to a fraction problem not make sense, and how can benchmark fractions help you notice?
- How do you decide which benchmark fraction to use for estimation?