Writing Ratios
Mrs. Crasto owns 6 Harry Potter posters and 4 Marvel posters. Write the ratio of Marvel posters to Harry Potter posters in simplest form.
2:3
Are the ratios 2:3 and 6:9 equivalent?
Yes
Mr. Iavarone eats 2 scoops of chocolate ice cream for every 3 scoops of vanilla ice cream. If Mr. I eats 8 scoops of chocolate ice cream this week, how many scoops of vanilla does he eat?
12 scoops of vanilla
Mrs. Hogan has 3 basketballs for every 2 soccers balls. If she has 36 basketballs, how many soccer balls does she have?
24 soccer balls
A bag of groceries contains 2 oranges, 3 apples, 5 potatoes, and 10 carrots. Write the ratio of oranges to apples in simplest form.
2:3
Are the ratios 5:4 and 20:18 equivalent?
No.
Ms. Reck needs 3 beakers for every 5 pipets in her science lab. If Ms. Reck has a total of 40 beakers and pipets in her lab, how many beakers does she have?
15 beakers
Mrs. Matrese's desk has 5 pens for every 2 pencils. If she has a total of 35 pens and pencils, how many pencils does she have?
10 pencils
Ms. Reno has 10 recorders, 3 guitars and 1 piano. What is the ratio of guitars to total instruments?
3:14
Ms. Saxe is wearing a necklace with 4 green beads for every 7 blue beads. The fifth grades thinks that her necklaces has 20 green beads and 30 blue beads. Are they correct?
No
For every 5 non-fiction books in Ms. Layton's room, there are 8 fiction books. If there are 36 more fiction than non-fiction books, how many fiction books are in Ms. Layton's room?
96 fiction books
Ms. Pauli wants to hang 5 green flags for every 2 yellow flags to decorate the hallway. If Ms. Pauli hangs up 30 more green flags, how many yellow flags does she hang up?
20 yellow flags
A bag of groceries contains 2 oranges, 3 apples, 5 potatoes, and 10 carrots. What is the ratio of fruit to vegetables in the bag, in simplest form?
1:2
Ms. Carsillo's classroom has a ratio of 1 beanbags to 6 desks. Arabella says that Ms. Carsillo's room has 18 desks and 3 beanbags. Is she correct?
Yes
At the beginning of the year, the ratio of students in homework club to the students in art club was 3: 8. In January, students were moved around, changing the ratio of students in homework club to the students in art club to 4: 7. How many students started in homework club if there were 92 students in homework club after January?
69 students
During first semester, the ratio of the number of students in art class to the number of students in gym class was 2: 7. However, the art classes were really small, and the gym classes were large, so Sister Debbie changed students’ classes for second semester. In second semester, the ratio of the number of students in art class to the number of students in gym class was 5: 4. If 75 students were in art class second semester, how many were in gym class first semester?
105 students