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7th Math 2.4 Classwork B 22-23

Last updated over 2 years ago
10 questions

Math - [Lesson 2.4]

Teacher: Mr. Kovalik (408) 314-1092


Objective and Summary:
SWBAT recognize patterns for quickly finding sums of positive and negative integers
1

No More Number Line--You are given the following expression:

-24+18

a) Is our sum positive or negative? Why? Use math vocabulary.

CFS:
#1: Uses mathematical evidence to determine the sign of a sum

1

You are given the following expression:

-24+18

b) What is the sum? Write an addition equation.

"-24+18=______"

1

More Practice--You are given the following expression:

-3+75


a) Is the sum of the following expression positive or negative? Explain using math vocabulary.

"The sum is (positive / negative) because..."

CFS:
#1: Uses mathematical evidence to determine the sign of a sum

1

-3+75

b) What is the sum? Write an addition equation.

MEDIUM Problems
1

Categories--Decide whether the following expressions will have a positive sum or a negative sum. You do not need to calculate the sum.

(Drag and drop using the blue arrows to move into the positive or negative boxes)

  • 100+(-132)
  • -7+45
  • -37+(-10.5)
  • 4.5+(-1.75)
  • Positive Sum
  • Negative Sum
1

SUM--Find the sum without using a number line. Write an addition equation.

105+(-126)

CFS:
#1: Uses mathematical evidence to determine the sign of a sum
#2: Shows accurate calculations for sum

1

SPICY--Try if you have time

SUM, AGAIN--Find the sum without using a number line. Write an addition equation.

1.8+(-6.6)

CFS:
#1: Uses mathematical evidence to determine the sign of a sum
#2: Shows accurate calculations for sum

2

Sort!--Decide whether the following expressions will have a positive sum or a negative sum. You do not need to calculate the sum.

(Drag and drop using the blue arrows to move into the positive or negative boxes)

  • -17+10
  • 18+(-35)
  • -12.5+3
  • 22+(-6)
  • Positive Sum
  • Negative Sum
2

SUM--Find the sum without using a number line. Write an addition equation.
**You must SYW on formative**

-99+14

"-99+14=____"

CFS:
#1: Uses mathematical evidence to determine the sign of a sum
#2: Shows accurate calculations for sum

1

CHALLENGE--Today's lesson is short. Set a goal for yourself. How many IXL lessons do you want to master? (Smartscore over 80)

When class is over, tell me how many recommended/on grade level lessons you mastered.

Awesome! You can...

1) Continue adding integers without number lines on IXL (Search code: QFU)

2) Work on advanced topics on IXL/Khan (look in Algebra 1, Functions for a challenge)