Gretchen rode her snowmobile 114 miles to a snowmobile trail. She rode on the trail for 556 miles and then rode back home. Which addition sentence shows how many miles Gretchen rode in all? A. 114+556=635 B. 114+556=7112 C. 114+556+114=813 D. 114+556+114=712

B. 1 1/4+5 5/6=7 1/12

Step-by-step explanation:

Gretchen rode her snowmobile 1 1/4 miles to a snowmobile trail. She rode on the trail for 5 5/6 miles and then rode back home. Which addition sentence shows how many miles Gretchen rode in all?

This is calculated as:

1 1/4 miles + 5 5/6 miles

1 + 5 + ( 1/4 + 5/6)

Lowest common denominator = 12

6 + ( 3 + 10/12)

6 + 13/12

6 + 1 1/12

7 1/12

Option B is correct

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