Integer Review

Word Problems

100

The temperature was -4 degrees in the morning and increased 15 degrees by the afternoon. What is the temperature after the increase?

11 degrees

200

Abbi and Ella are making a 50¢ clay pot. Alec "accidentally" breaks them. He only has 45¢. How much money does he have now?

-5¢

300

Two people are at different elevations, one is at an elevation of -150 feet and the other is at an elevation of 234 feet. How far apart are the elevations of these two people? 

384 feet

400

Noah went to the hardware store. He bought 9.95 with his bank card. He only had 8 dollars in his account. What is his account balance now?

What is -1.95 dollars

500

Tanya bought 3 bananas that cost $0.59 each, 5 apples that cost $1.49 and a salad that cost $8.28. She paid the cashier with a $20 bill, what change did she receive back? 

$2.50

Adding

100

-16 + 4

-12 (12 more negatives)

200

-12 + (-5)

-17 (Grand Total of negatives)

300

19 + (-6)

13 (13 more positives)

400

-9 + (-3) + 5

-7 (-9 + (-3) = Grand Total of -12, then -12 + 5 = 7 more negatives)

500

18 + (-5) + 6

19 (18 + (-5) = 13 more positives, 13 + 6 = 19)

Subtracting

100

11 - (-2)

13 (Keep, Change, Change makes it 11+2 which equals 13)

200

-10 - 21

-31 (Keep, Change, Change makes it -10 + (-21) which gives you a Grand Total of 31 negatives)

300

-8 - (-10)

2 (Keep, Change, Change makes it -8 + 10 which gives you 2 more positives)

400

2 - 13

-11 (Keep, Change, Change makes it 2 + (-13) which gives you 11 more negatives)

500

Rewrite the following as addition only THEN SOLVE

-2+(-3)-10-(-12)+14

-2+(-3)+(-10)+12+14

=11

Multiplying and Dividing

100

-8(-5)

40 (same sign, positive answer)

200

4(-4)

-16 (different signs, negative answer)

300

-42/6

-7 (different signs, negative answer)

400

-60/(-5)

12 (same signs, positive answer)

500

3(-8)(2)

-48 (3 times (-8) equals -24, and -24 times 2 equals -48.  Both times, different signs give you a negative answer.)

Order of Operations

100

-2(4) + (-11)

-19 (-2 times 4 equals -8 and -8 +(-11) gives you a Grand Total of 19 negatives)

200

6 + -32/8

2 (-32/8 = -4 and 6 + (-4) gives you 2 more positives)

300

-3(4) + -7

-19 (-3 times 4 equals -12, and -12 + (-7) gives you a Grand Total of 19 negatives.)

400

-3 - (-10)(2)

17 (-10 times 2 equals -20.  Keep, Change, Change gives you -3 + 20 which gives you 17 more positives.)

500

6 - 7(-5)

41 (7 times -5 is -35.  Keep, Change, Change gives you 6 + 35 which is a Grand Total of 41 positives.)