Operations with Rational Numbers — Test

Question 4 • Grade 7 Mathematics

Mr. Maddox asked four students to create a number line to help find the sum of the fractions. negative 7 tenths plus 4 tenths Which number line would be best to find this sum?

Answer

Image with description A number line ranges from 0 to fifteen-tenths by tenths.

Image with description A number line ranges from four-tenths to eleven-tenths by tenths.

Image with description A number ranges line from negative eight-tenths to 0 by tenths.

Image with description A number ranges line from negative three-tenths to three-tenths by tenths.

Explanation

Start at 0 and move 7 tenths left to −0.7, then move 4 tenths right. You end at −0.3, so the number line must include −0.7 and the values between it and 0. Choice C, from −0.8 to 0, shows the needed range; choice D does not extend far enough left to include −0.7.

AI-written and checked against the verified answer.

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