Addition
Subtraction
Multiplication
Addition and Subtracting
Word Problems
100
435+335
What is 770
100

Write as addition and solve 300-250

What is 50

100

8*8-8

What is 56

100

90+32-20-10

What is 92

100
Joe said -75+54 was 129.Is he wrong, and if so then explain his error and say the real answer to the problem.
What is yes, because he added 75+54 instead of -75+54, which is 21
200
4+(-4)
What is 0
200

Write as addition and solve 5-(-4)

What is 9

200

-9*12+10

What is 98

200

Write as addition and solve 98-65

What is 33

200
Joe was 2,000 feet above sea level. His friend Bob was 1,568 feet below sea level. Joe wanted to know what the distance was between thew. What was it?
What is 3,568
300

-15+(-17)

What is (-32)

300

Write as addition and solve -54-13

What is 41

300

-15*-7+10

What is 115

300

Write as addition and solve 40-(-57)

What is 97

300
Billy said -89+56 is -33. Is he wrong, and if so explain his error and right the right answer.
What is no
400
-35+27
What is -8
400

Tasia’s bank account balance was -$25.64. She deposited a check into her bank account and her new balance is $152.29. How much was the check that Tasia deposited into her account?

$177.93

400

A weather station on the top of a mountain reports that the temperature is currently 0℃ and has been falling at a constant rate of 3 ℃ per hour. If it continues to fall at this rate, find each indicated temperature. Explain or show your reasoning.


a. What will the temperature be in 2 hours?


b. What will the temperature be in 5 hours?

(a) The multiplication expression can be written as, -3 x 2 = -6℃. (b) The multiplication expression can be written as, -3 x 5 = -15℃.

400

Brad’s checking account starts off with a balance of $126.50. Throughout the week, Brad pays a bill for $87.21, and pays $5.64 for breakfast. He deposits $15.00 but then pays another bill for $55.25. At the end of the week, he gets a notice from the bank that he has a negative balance. How much does Brad need to deposit into his account to get to a $0 balance?

$6.60

400
Harry was plying football.He started at twenty yards. He got the ball, but lost ten yards. The next play he gained fifteen, and the next play he lost five. What yard is he at now?
What is 20
500

Evaluate the following. 

  1.  −10 − 3 + 6 + 15 + (−8)

a. 0

500

Two seventh-grade students, Monique and Matt, both solved the following math problem. The temperature drops from 7°F to -17°F. By how much did the temperature decrease?  The two students came up with different answers. Monique said the answer is 24 °F, and Matt said the answer is 10°F. Who is correct? Explain, and support your written response using a number sentence and a vertical line diagram.

 24°F

500

Decide if each equation is true or false. [4 points]

  1. 7(8)=56

  2. (-7)8=56

  3. (-7)(-8)=56

  4. (-7)(-8)=-56

  5. (3.5)(12)=42

  6. (-3.5)(-12)=-42

  7. (-3.5)(-12)=42

  8. (-12)72=42

(True: a, c, e, g), (False: b, d, f, h)

500

Ava and Jiao each swam a two-lap swimming race. Ava took 31.49 seconds to finish her first lap and 30.03 seconds to finish her second lap. Jiao finished her two-lap swimming race 1.76 seconds faster than Ava. What was Jiao’s total swimming time, in seconds, after she finished her two-lap race?

59.76 seconds

500
Sally says -12*-12*-5 is -720, but Sarah says -12*-12*-5 is 720. Who's right? Explain.
What is -720, because -12*-12 is 144, since two likes equal a positive, times five is is 720, since differences equal a negative.
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