Janna 2

Janna lives 4 3/10 miles from school. She estimates she travels 4 x 2 x 5 or 40 miles weekly. Is her estimate an overestimate or an underestimate? Explain.

Correct answer:

x = underestimate

Step-by-step explanation:

a=4103=4+103=104 10+3=1040+3=1043=4103=4.3 mi b=4 2 5=40 mi  n=2 5=10  A=n a=10 1043=1010 43=10430=43 mi  43 mi >30 mi A>b x=underestimate

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