Addition
What is one integer rule for addition.
big positive + little negative = positive OR big negative + little positive = negative
What is the integer rule for subtraction.
Add the opposite!
OR
Change the subtraction sign to addition, change the sign of the second integer, follow addition rules to get the answer.
What are the rules for multiplying integers?
If the signs are alike, the answer will be positive. If the signs are different, the answer will be negative.
True or False: I can use inverse operations to check my work when solving division problems.
TRUE
What does each letter in BEDMAS stand for?
Brackets, exponents, division, multiplication, addition, subtraction.
Add. 37 + (-19) =
18
Write this equation as an addition equation.
-42 - (-16) = ___
-42 + 16 = -26
True or False: The multiplication of integers can be written without the multiplication symbol.
TRUE
Solve.
What part of the equation do you solve first?
8 x 3 - 4 + 2^2
Exponent: 2^2
Fill in the blank: __ + __ = -12
-12
Solve. -7185 - 4893 + (-2642) = ___
-14720
Multiply. (-8)(+14) =
-112
Write this division equation as a multiplication equation. -84/7 = -12
-12 x 7 = -84
Calculate.
15 + 3^3 - (4x3) = __
15 + 27 -12 = 30
Solve. - 13 + 17 - 6 = ___
-2
Calculate. -50 + (-60) + 90 - (-70)
50
Write a multiplication equation for this addition equation: (-9)+(-9)+(-9)+(-9)+(-9)+(-9)+(-9)
-9 x 7
Fill in the blanks: __ / __ = -12
-36/3 = -12 OR -24/2 = -12
Why do we need to follow the order of operations?
We need the order of operations or else everyone would get different answers.
Solve. __ - __ + __ = -10
0 - 0 + (-10) OR 20 - 42 + 12 OR -6 - 0 + (-4)
What are 3 different ways to solve subtraction equations?
Use a calculator, number line, counters
Write an integer multiplication sentence for: Justin coaches basketball for 8 hours a week, earning $11 an hour.
8x11=$88
Use division to find the mean of Malcolms basketball scores over 7 days.
Day 1: +6 Day 2: -3 Day 3: -3 Day 4: +6 Day 5: +9
6 + (-3) + (-3) + 6 + 9 = 15
15/5 = 3
Mean of Malcolms basketball scores over the last 7 days is 3.
Fill in the missing operation signs:
-12 __ 4 __ (-3) = -24
-12 + 4 x (-3) = -24
-12 + (-12) = -24