Same Signs
Different Signs
Subtraction to addition
Multiplying and Dividing Rational Numbers
100
The sum of $35.70 and $4.30.
What is $40?
100
$10.50 + (-$2.20)
What is $8.30?
100
3 - (-4)
3+4 = 7
100
True Or False
-1/2 * 20 = 10
What is False?
200
The addition expression shown here.
What is -6 + -7?
200
An expression that represents the addition shown on the number line.
-8 + 3
200
-5 - (-7)
-5 + 7 = 2
200
Write 3 x - 2 as addition.
-2 + -2 + -2
300
-1/2 + - 1/2
What is - 1?
300
-3/4 + 1/4
-1/2
300
4-(-12)
4 + 12 = 16
300
-2.3 * -3
What is 6.9?
400
Jane deposited $100 dollars into her bank account on friday, then she made another deposit of $55 on Monday Morning. What is the addition equation which shows her total bank balance on Monday Afternoon?
$100 + $55 = $155
400
Daren deposited $150 in his account on Friday. He spent $79.80 at dinner on Saturday. Write an expression which shows the balance in Daren's account on Sunday Morning.
What is $150 + (-79.80)
OR
$150 - $79.80
400
-15 - 40
-15 + -40 = -55
400
Clare is cycling at a speed of 12 miles per hour east. If she starts at a position chosen as zero, what will her position be after 2 hrs?
24 miles east
500
On Wednesday, Jane withdrew $25 from her bank account. She then withdrew another $37 on Thursday. What is the addition equation that shows the changes in her bank account? What does it mean?
-$25 + -$37 = -$62
It means her bank account has $62 less in it.
500
Alicia had -$11 in her checking account. She did a few chores and made $44.50. She decided to pay for her and her friend to go to the movies, and each ticket cost $6.25. How much money does she have left in her checking account?
What is $21?
500
An airplane is cruising at an altitude of 2500 ft and a submarine is submerged at 850 ft below sea level. What is the difference in their elevations?
3350 ft.
500
-12 *-3*-2
What is -72?