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7th Math 2.10 Version B 22-23
By Alex Kovalik (he/him/his)
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Last updated almost 3 years ago
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Math - [Lesson 2.10]
Teacher: Mr. Kovalik (408) 314-1092
Objective and Summary:
SWBAT understand rules for multiplying postive/negative integers by connecting to addition
Question 1
1.
You have four cards that say "-5" on them.
Write an
addition
equation to find the sum.
CFS:
#1:
Accurately interprets positive and negative signs
#2:
Accurately writes equation
Question 2
2.
Represent the same four cards that say "-5" as multiplication.
Write a
multiplication
equation.
Question 3
3.
Grading Error
--Mr. Kovalik made a mistake when grading your last test. He accidentally marked down
two 3 point penalties
.
If he gets rid of these penalties, how will this affect your score?
Write a
multiplication equation
to represent the change to your test score.
CFS:
#1:
Accurately interprets positive and negative signs
#2:
Accurately writes equation
Question 4
4.
Calculate
--What is the value of -4(-9)?
CFS:
#1:
Accurately interprets positive and negative signs
MEDIUM Problems
Question 5
5.
12(-2)
-3(-8)
-6(4)
Question 6
6.
Mix n Match
--Match the multiplication expressions with their products.
(Drag the blue arrows on the left side
up or down
so that they match with the answer on the right side)
CFS:
#1:
Accurately interprets positive and negative signs
Draggable item
arrow_right_alt
Corresponding Item
-15\times2
arrow_right_alt
-56
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Question 7
7.
Skill and Drill
--Calculate the following. Type in the SYW section
visibility
View drawing
Question 8
8.
SPICY--Try if you have time.
BE CREATIVE
--Find multiple ways of getting a value of -18 through according to the criteria:
a)
Use one positive and one negative number and
multiplication
.
b)
Use only negative numbers and
addition
.
Question 9
9.
Derek wrote the following addition expression to represent the money he has spent on hats for
Among Us:
-2+(-2)+(-2)+(-2)+(-2)+(-2)+(-2)+(-2)
Help him represent the total amount of money he has spent by writing an
equivalent multiplication equation.
CFS:
#1:
Accurately interprets positive and negative signs
#2:
Accurately writes equation
Nice job! This is a shorter lesson, so please do the following:
1) Practice more
integer multiplication on IXL: (Search Codes: NB8, K7U, DQT)
2) Practice challenge skills like Algebra 1 or do more diagnostic practice to push yourself ahead!
MULTIPLE--
Mariah is trying to find as many ways as possible to get a final answer of
-24
.
Select
all
expressions that are
equivalent
to -24.
CFS:
#1:
Accurately interprets positive and negative signs
-12+(-12)
12+(-2)
-2\times(-15)
56
8\times(-7)
-30
-7\times(-8)
30