Adding Integers and Rationals
-10 + -15
-25
-12-5
-17
(-9)(-10)
90
-140÷14
-10
Kai has $13 in his checking account. He buys school supplies and ends up with $5 in his account. What was the overall change in his account?
-$8
-8 + 20
12
25-(-4)
29
(-1.23)(4)
-4.92
-2.4÷(-0.8)
3
Mackenzie bought 3 packs of pencils for $4 each and a pencil for $7. Ryan bought 4 binders for $6 each and used a coupon for $6 off. Write and evaluate expressions to find who spent more money.
Mackenzie: $19 Ryan: $18
Mackenzie spent more money.
-0.67 + 0.2
-0.47
-9.2 - 11.3
(-0.56)(-3.5)
1.96
-3.62÷0.32
-11.3125
Aydon withdrew $50.45 from his account every day for a week. What was the change in his account in that week?
-$353.15
-1/4 + 5/24
-1/24
1/6 - 7/36
-1/36
(-1/9)(-9/15)
1/15
11/12 ÷ (-8/19)
-209/96
Mrs. Benedict worked at Dairy Queen and earned $12.20 per hour. When she worked more than 40 hours in the week, she earned 1.5 times her normal hourly rate for each extra hour. Mrs. Benedict worked 43 hours one week. What was her total pay before deductions?
$542.90
11/30 + (-8/15)
-1/6
-1 2/7 - (-9 3/4)
257/28 or 8 13/28
(3 1/2)(-8 3/5)
-301/10
-7 5/6 ÷ (-10 2/3)
47/64
Lake Erie's level dropped an average of 3 4/5 inches per day for 21 days. A heavy rain then raised the level 8.25 feet, after which it dropped 9 1/2 inches per day for 4 days. What was the overall change in the lake level?
-2 feet