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7th Math Unit 2 Day 5 - 11/6

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

Question 2
2.

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

Question 3
3.

Rewrite the subtraction expression as addition

-9-(-2)

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

Question 4
4.

Rewrite the subtraction expression as addition

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

Question 5
5.

Rewrite the subtraction expression as addition

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

Question 6
6.

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
Question 7
7.

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

Question 8
8.

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

Question 9
9.

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.

Question 10
10.

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.

Question 11
11.

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

Question 12
12.

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

Question 13
13.

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
Question 14
14.

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