Equations
Word Problems
Review
Where did we go wrong?
100
8 x 1/2=
8/2= 4
100
Ms. Cunningham has 18 yards of fabric. She cuts it into 6 equal parts and uses 5 of the pieces to make a dress. How many yards of fabric does she need?
90/15 yards = 6 yards
100
What is the missing word:
To add fractions with unlike denominators, we must find the common _________.
Denominator.
100
2/9 x 18 = 16/9
Tip: solve the problem and maybe you'll see where they went wrong.
This person did 2/9 x 8/2 = 16/9
BONUS: What is the correct answer? Everyone gets two minutes. First team's hand to go up and is correct may gain 100 pts.
200
25 x 3/5=
75/ 5= 15
200
Mr. C walks 1/3 mile every day for 5 days. How far did he walk in all? What equation should I use to solve?
1/3 x 5 = 5/3 miles or 1 and 2/3 miles
200
21/36 - 1/2 =
3/36 or 12.
200
3/7 x 5 = 15/35
Tip: solve the problem and maybe you'll see where they went wrong.
Multiplied 5/5 x 3/7 = 15/35
BONUS: What should they do to get it right next time? Everyone gets two minutes. First team's hand to go up and is correct may gain 100 pts.
300
12 x 4/10 =
48/ 10= 4 and 8/10 or 4/5
300
For a class party, each student drinks 2/3 of a bottle of juice.
If there are 9 students, how many bottles of juice are needed?
6 bottles of juice.
300
64/12 + 56/8 =
296/24 or 37/3 or 12 and 1/3.
300
11/2 x 4 = 22
Tip: solve the problem and maybe you'll see where they went wrong.
Trick: this is correct. 
400
Is this correct: 15/ 20 x 6 = 4 and 1/2
Yes
400
Mr. Jordan brings 21 pizzas for class 204 and the class eats 4/6 of each pie. Did the class eat more than 10 pies? How do you know?
Yes and explain
400
2 and 3/8 - 1 and 4/6 =
17/ 24
400
9/10 x 25 = 9 / 250
This person multiplied the whole number by the denominator and then kept the numerator.
Or
Instead you should have done 9/10 x 25/1 = 225/10.
BONUS: Can you simplify it? Everyone gets two minutes. First team's hand to go up and is correct may gain 400 pts.
500
900 x 2/9=
200
500
Ms. Garcia spent 3/4 of an hour reading to her brother each day for 7 days. How much total time did she spend reading? Show a model to represent this.
21/4 or 5 and 1/4 hours
Show a model similar to this
BONUS: What is 1/4 of an hour? All teams have 2 minutes.The first team to raise their hand and explain correctly earns 100 points.
500
Is this correct?
22 and 2/5 + 13 and 5/7= 33 and 7/12
Answer with "yes" or "no".
BONUS: Explain if you agree or disagree with the other teams answer. Everyone gets one minute. First team's hand to go up and is correct may gain 100 pts.
BONUS BONUS:
Explain how they got 33 and 7/12. Everyone gets one minute. First team's hand to go up and is correct may gain 500 pts.
500
600 x 2/3 = 40
Tip: solve the problem and maybe you'll see where they went wrong.
This person did 60/1 x 2/3= 40 or they simplified incorrectly.
BONUS:How can you use estimation to determine whether 40 is a reasonable answer? All teams have 2 minutes. The first team to raise their hand and explain correctly earns 500 points.