Boston has a temperature of -20 degrees. It is colder in New York than in Boston. Which value could represent the temperature in New York?

− 30 ° -30\degree − 3 0 °

− 19 ° -19\degree − 1 9 °

Which situation could the integer -50 represent?

the temperature on a warm Spring day

the distance driven on the way to the beach

A football team gained 9 yards on one play and then lost 22 yards on the next play. Write a sum of integers to find the overall change in field position.

9 + ( − 22 ) = − 13 9+\left(-22\right)=-13 9 + ( − 2 2 ) = − 1 3

− 9 + ( − 22 ) = − 13 -9+\left(-22\right)=-13 − 9 + ( − 2 2 ) = − 1 3

9 + ( − 22 ) = 13 9+\left(-22\right)=13 9 + ( − 2 2 ) = 1 3

9 + ( − 22 ) = − 31 9+\left(-22\right)=-31 9 + ( − 2 2 ) = − 3 1

Jim's business had a profit of $290 in its first month, and a loss of $130 in its second month. Write a sum of integers to find the profit/loss after the first two months.

290 + ( − 130 ) = 160 290+\left(-130\right)=160 2 9 0 + ( − 1 3 0 ) = 1 6 0 ; a profit of $160

290 − 130 = 160 290-130=160 2 9 0 − 1 3 0 = 1 6 0 ; a loss of $160

− 290 + ( − 130 ) = − 410 -290+\left(-130\right)=-410 − 2 9 0 + ( − 1 3 0 ) = − 4 1 0 ; a loss of $410

290 − ( − 130 ) = 410 290-\left(-130\right)=410 2 9 0 − ( − 1 3 0 ) = 4 1 0 ; a profit of $410

Negative Integer • Negative Integer =

It depends on which number has the largest absolute value.

Negative Integer x Positive Integer =

It depends on which number has the largest absolute value.

When adding integers with DIFFERENT signs...

you take the sign of the larger absolute value

you take the sign of the smaller absolute value

What are the rules for subtracting integers?

Change subtraction sign to addition and use the opposite of the second number.

Change to multiplication and use the opposite of the second number.

Find the opposite of both numbers and then add.

Subtract like normal and keep the larger sign.

Adding, Subtracting, Multiplying, Dividing Integers Review

Authored by Paula Larsen

Mathematics

7th Grade

CCSS covered

Used 23+ times

Adding, Subtracting, Multiplying, Dividing Integers Review

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FILL IN THE BLANKS QUESTION

15 mins • 1 pt

-9 + (-5)

(a)

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CCSS.7.NS.A.1C

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3 + -7

(a)

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CCSS.7.NS.A.1C

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-15 - 9

(a)

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CCSS.7.NS.A.1C

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-4(5)

(a)

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

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15 mins • 1 pt

(-25) ÷ (-5)

(a)

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CCSS.7.NS.A.2A

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64 ÷ (-8)

(a)

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

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-3(-4)

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

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