AnswersGrade 7 MathematicsMultiplying Integers

Multiplying Integers — Quiz Answers

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Yan is climbing down a ladder. Each time he descends 4 rungs on the ladder, he stops to see how much farther he has to go. If Yan made 8 stops with no extra steps, which expression best shows another way to write the product of the number of ladder rungs that Yan climbed?

A
8 plus 8 plus 8 plus 8 plus 8 plus 8 plus 8 plus 8
B
negative 1 times open paren 4 plus 4 plus 4 plus 4 close paren
C
negative 4 plus negative 4 plus negative 4 plus negative 4 plus negative 4 plus negative 4 plus negative 4 plus negative 4
D
4 plus 4 plus 4 plus 4
3

At 4 p.m., the temperature started to change drastically. Each hour, for three hours, the temperature decreased by 7 times degree F Which expression best shows another way to write the product for the temperature change?

A
7 plus 7 plus 7
B
7 plus 7 plus 7 plus 7
C
negative 7 plus negative 7 plus negative 7 plus negative 7
D
negative 1 times open paren 7 plus 7 plus 7 close paren
7

How is the product of 3 and negative 2 shown using integer tiles?

A
Image with description There are three groups of two integer tiles each labeled with a plus sign.
B
Image with description There is a group of 3 integer tiles each labeled with a negative sign. There is another group of 2 integer tiles each labeled with a plus sign.
C
Image with description There are three groups of two integer tiles each labeled with a negative sign.
D
Image with description There is a group of 3 integer tiles each labeled with a plus sign. There is another group of 2 integer tiles each labeled with a negative sign.
8

How is the product of 2 and negative 5 shown on a number line?

A
Image with description There is a number line from negative 10 to 10 by 1s. There is a jump from 10 to 5. There is another jump from 5 to 0.
B
Image with description There is a number line from negative 10 to 10 by 1s. There is a jump from 0 to negative 5. There is another jump from negative 5 to negative 10.
C
Image with description There is a number line from negative 10 to 10 by 1s. There is a jump from 0 to 5. There is another jump from 5 to 10.
D
Image with description There is a number line from negative 10 to 10 by 1s. There is a jump from negative 10 to negative 5. There is another jump from negative 5 to 0.

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