Adding and Subtracting Integers
Evaluate
7 + (−2) =
= 5
³⁄₁₀ + ⅗ + ½ + ⅕ =
1⁶⁄₁₀ or 1⅗
¼ X ½ =
⅛
evaluate...
(–5) × (–3)
= 15
What NBA team has the most championships?
Celtics
Replace each with a sign to make each equation true. Then calculate the value of the equation.
(–3) – (–5) = (–3) + (5)
(+5)
= 2
1⁹⁄₁₀ - ⅖ - ½ + ⅕ =
1⅕
⁵⁄₄ / ¼ =
5
Evalute
(–20) ÷ (+5)
-4
In the order of how far the planets in our solar system are from the sun, what number is earth?
3rd closest
Evaluate
(–3) + 7 – (–2) =
= 6
⅔ + ⅓ - ⁷⁄₁₂ =
⁵⁄₁₂
Kiki has 5¾ (yards) of PVC pipe. They use ⅓ of the pipe for a plumbing project. How many yards of pipe are left?
= 3¹⁰⁄₁₂
List three pairs of numbers that have this product.
24
a) –2 and –12; 3 and 8; –6 and –4
What year did the Titanic sink?
1912
Replace each with a sign to make each equation true. Then calculate the value of the equation.
(2) – (6) = (2) + (6)
(-6)
= -4
⅔ + ⅓ - ⁷⁄₁₂ =
⁵⁄₁₂
2⅓ / ⁶⁄₅ =
1¹⁷⁄₁₈
List three pairs of numbers that have this product.
–36
b) –2 and 18; 4 and –9, 3 and –12
What is the newest Olympic sport?
break dancing
Jamie uses integers to keep track of their spending. At the beginning of September, they had $76 in their bank account. Then, they made the following transactions. • She deposited $65 earned cutting lawns. • They used their debit card to buy a $25 gift for a friend. • her parents deposited $50 in the account as a birthday gift. • she withdrew $75 to pay for a school trip.
$76 + $65 + (–$25) + $50 + (–$75) = $91
3⁵⁄₇ - 2½ + ²⁄₇ =
1½
Dani has a piece of ribbon 2¾yards (yds) long. How many pieces that are ½ yard long can Dani cut? How much ribbon will be left over?
¹¹⁄₄
Samar is climbing a mountain in British Columbia. They know that as they climb higher, the temperature will drop. For each 150 m Samar climbs up, the temperature will be 1°C cooler. They are starting from a base camp at 1500 m where the temperature is 8°C. What will the temperature be at an altitude of 3000 m?
First, I have to figure out how much higher Samar is climbing. 3000 m – 1500 m = 1500 m Since the temperature changes every 150 m, I have to figure out how many times 150 fits into 1500. 150 × 10 = 1500 Since the temperature changes by –1°C for every 150 m, I have to calculate the total change. 10 × (–1°C) = –10°C
What is the most visited amusement park in the world per year?
Magic Kingdom