Extra Set

Grade 6 · Unit 3 · UA · Version A · 4C44

Unit 3 review

Name ________________

Date ________________

Period ________________

1.
Sam has 4 red marbles and 9 blue marbles. Write the ratio of red to blue in simplest form.
Answer. 4 : 9
Red : blue = 4 : 9 = 4 : 9.
2.
Are the ratios 3 : 2 and 12 : 8 equivalent?
Answer. yes
Both simplify to 3 : 2, so they are equivalent.
3.
In Mei’s class, 3 students walk and 5 students bike. What is the part-to-whole ratio of walkers to the class, in simplest form?
Answer. 3 : 8
Walkers : class = 3 : 8 = 3 : 8.
4.
Grace has 6 red marbles and 9 blue marbles. Write the ratio of red to blue in simplest form.
Answer. 2 : 3
Red : blue = 6 : 9 = 2 : 3.
5.
Complete the equivalent ratio: 7 : 7 = 28 : ? Then Priya needs 5 of that amount. What is the total they need?
A B
7 7
28 ?
Answer. 140
Multiply both parts by 4: 7 × 4 = 28. Then multiply by 5: 140.
6.
In Mei’s class, 4 students walk and 5 students bike. What is the part-to-whole ratio of walkers to the class, in simplest form? Write a complete answer — Mei will compare with a partner.
Answer. 4 : 9
Walkers : class = 4 : 9 = 4 : 9.
7.
Nora has 3 red marbles and 9 blue marbles. Write the ratio of red to blue in simplest form. Write a complete answer — Malik will compare with a partner.
Answer. 1 : 3
Red : blue = 3 : 9 = 1 : 3.
8.
Are the ratios 5 : 3 and 20 : 12 equivalent? Write a complete answer — Nora will compare with a partner.
Answer. yes
Both simplify to 5 : 3, so they are equivalent.
9.
In Luis’s class, 7 students walk and 4 students bike. What is the part-to-whole ratio of walkers to the class, in simplest form? Write a complete answer — Malik will compare with a partner.
Answer. 7 : 11
Walkers : class = 7 : 11 = 7 : 11.
10.
Ava has 4 red marbles and 9 blue marbles. Write the ratio of red to blue in simplest form. Write a complete answer — Malik will compare with a partner.
Answer. 4 : 9
Red : blue = 4 : 9 = 4 : 9.
11.
Think
Nora tried this problem:
Are the ratios 5 : 3 and 25 : 15 equivalent?
Nora wrote no. That is not correct. What is the right answer?
Answer. yes
Nora’s answer no is off. Both simplify to 5 : 3, so they are equivalent.
12.
Think
Malik tried this problem:
In Elena’s class, 6 students walk and 5 students bike. What is the part-to-whole ratio of walkers to the class, in simplest form?
Malik wrote -6 : 11. That is not correct. What is the right answer?
Answer. 6 : 11
Malik’s answer -6 : 11 is off. Walkers : class = 6 : 11 = 6 : 11.

A	B
7	7
28	?

Original extra practice. Keys are computed from the items, not guessed.

UA · Unit 3 review