7th Math Unit 2 Day 5 - 11/6

Last updated over 1 year ago
14 questions
Objective and Summary:
SWBAT rewrite subtraction of a number as adding its opposite
1

On Your Own--Rewrite as addition and find the sum.
**Show your work just like we did in the bottom of notes**

–3 – 7
CFS:
#1: Accurately shows the rule of subtraction
#2: Accurately determines sign of the answer

1

On Your Own--Rewrite as addition and find the sum.
**Show your work just like we did in the bottom of notes**

6-(-4)

CFS:
#1: Accurately shows the rule of subtraction
#2: Accurately determines sign of the answer

1

Rewrite the subtraction expression as addition

-9-(-2)

CFS:
#1: Accurately shows the rule of subtraction
#2: Accurately determines sign of the answer

1

Rewrite the subtraction expression as addition

–2 – ( –5)
CFS:
#1: Accurately shows the rule of subtraction
#2: Accurately determines sign of the answer

1

Rewrite the subtraction expression as addition

11 - ( -8)
CFS:
#1: Accurately shows the rule of subtraction
#2: Accurately determines sign of the answer

1

Rewrite the subtraction expression as addition

-10 - ( - 4)
CFS:
#1: Accurately shows the rule of subtraction
#2: Accurately determines sign of the answer

MEDIUM Problems
1

More Negatives

-7-(-17)

a) Rewrite the subtraction expression into addition.
b) Represent on the number line and find the sum.

CFS:
#1: Accurately shows the rule of subtraction
#2: Accurately determines sign of the answer

1

Equation Time--Rewrite into an addition equation (should have an equals sign) and find the sum.

4-9


CFS:
#1: Accurately shows the rule of subtraction
#2: Accurately determines sign of the answer

1

You currently have $70 on your prize check. Most of your points are positive points, but you also have a couple of deductions. It turns out that your homeroom teacher accidentally gave you a $5 deduction for not having homework, but then deletes this deduction.

i. Write a subtraction number sentence to represent this situation.

1

You currently have $70 on your prize check. Most of your points are positive points, but you also have a couple of deductions. It turns out that your homeroom teacher accidentally gave you a $5 deduction for not having homework, but then deletes this deduction.

ii. Rewrite the subtraction sentence as an addition number sentence and find your final prize check total.

1

SPICY--Try if you have time.
An airplane flies at an altitude of 26,000 feet. A submarine dives to a depth of 700 feet below sea level (-700). What is the difference in their elevations? Write an equation.


CFS:
#1: Accurately shows the rule of subtraction
#2: Accurately determines sign of the answer

1

SPICY--Try if you have time.
Rewrite as an addition equation and find the sum.

-7-(-1.5)

CFS:
#1: Accurately shows the rule of subtraction
#2: Accurately determines sign of the answer

4

Rule of Subtraction--Rewrite the following subtraction expression into an addition equation and find the sum.
-14-(-2)

CFS:
#1: Accurately shows the rule of subtraction
#2: Accurately determines sign of the answer

Woo! Keep going! Here is more subtraction practice. You should push yourself ahead or do challenge topics on IXL

1) Search code on IXL: FGG
2) Search code on IXL: QZA
3) Search code on IXL: HEU
1

How many skills were you able to master (80+ Smartscore) on IXL?