Which estimation could be used to make sure the answer is reasonable? Sofia mixed 3.15 L of grape juice with 4.75 L of cranberry
juice. Her friends drank 3.95 L of the juice mixture. How much juice was left over? A.
Answer: The amount left over was 4.05 L.
Estimation: 3.15 + 4.75 is about 7.
7 L – 4 L = 3 L
The amount left over was about 3 L.
B.
Answer: The amount left over was 3.95 L.
Estimation: 3.15 + 4.75 is about 8.
8 L – 4 L = 4 L
The amount left over was a little less than 4 L.
C.
Answer: The amount left over was 11.85 L.
Estimation: 3.15 + 4.75 is about 8 L.
8 L + 4 L = 12 L.
The amount left over was a little less than 12 L.
<span>A. Answer: The amount left over was 4.05 L. Estimation: 3.15 + 4.75 is about 7. 7 L – 4 L = 3 L The amount left over was about 3 L.
This is incorrect because 3.15+4.75 is closer to 8 than 7.
</span><span>B. Answer: The amount left over was 3.95 L. Estimation: 3.15 + 4.75 is about 8. 8 L – 4 L = 4 L The amount left over was a little less than 4 L.
This is correct because 3.15+4.75 is close to 8 and to find the amount left over you do have to subtract.
The correct answer is </span><span>B. Answer: The amount left over was 3.95 L. Estimation: 3.15 + 4.75 is about 8. 8 L – 4 L = 4 L <span>The amount left over was a little less than 4 L.
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