FastMath Fraction Fluency Grade Eight - Common Denominator

Math

Least-common-denominator fluency over generated denominator pairs. Learners practice the denominator control needed for adding fractions and later rational expressions.

8

196 frames at grade level 8

#Prompt
1Find the least common denominator of 14 and 4.
2Find the least common denominator of 9 and 9.
3Find the least common denominator of 5 and 7.
4Find the least common denominator of 2 and 8.
5Find the least common denominator of 3 and 2.
6Find the least common denominator of 7 and 7.
7Find the least common denominator of 3 and 6.
8Find the least common denominator of 2 and 15.
9Find the least common denominator of 8 and 7.
10Find the least common denominator of 7 and 2.
11Find the least common denominator of 13 and 11.
12Find the least common denominator of 8 and 12.
13Find the least common denominator of 15 and 10.
14Find the least common denominator of 3 and 15.
15Find the least common denominator of 12 and 4.
16Find the least common denominator of 5 and 15.
17Find the least common denominator of 3 and 5.
18Find the least common denominator of 14 and 14.
19Find the least common denominator of 7 and 5.
20Find the least common denominator of 14 and 15.
21Find the least common denominator of 8 and 13.
22Find the least common denominator of 7 and 11.
23Find the least common denominator of 8 and 8.
24Find the least common denominator of 5 and 8.
25Find the least common denominator of 4 and 3.
26Find the least common denominator of 9 and 3.
27Find the least common denominator of 8 and 4.
28Find the least common denominator of 7 and 8.
29Find the least common denominator of 4 and 13.
30Find the least common denominator of 4 and 12.
31Find the least common denominator of 2 and 7.
32Find the least common denominator of 14 and 7.
33Find the least common denominator of 10 and 2.
34Find the least common denominator of 5 and 11.
35Find the least common denominator of 6 and 4.
36Find the least common denominator of 14 and 9.
37Find the least common denominator of 3 and 4.
38Find the least common denominator of 3 and 14.
39Find the least common denominator of 13 and 15.
40Find the least common denominator of 11 and 2.
41Find the least common denominator of 15 and 8.
42Find the least common denominator of 11 and 4.
43Find the least common denominator of 3 and 7.
44Find the least common denominator of 11 and 5.
45Find the least common denominator of 2 and 9.
46Find the least common denominator of 4 and 15.
47Find the least common denominator of 15 and 5.
48Find the least common denominator of 14 and 6.
49Find the least common denominator of 6 and 15.
50Find the least common denominator of 9 and 12.
51Find the least common denominator of 13 and 9.
52Find the least common denominator of 10 and 6.
53Find the least common denominator of 14 and 5.
54Find the least common denominator of 4 and 11.
55Find the least common denominator of 7 and 12.
56Find the least common denominator of 13 and 10.
57Find the least common denominator of 11 and 13.
58Find the least common denominator of 14 and 11.
59Find the least common denominator of 13 and 13.
60Find the least common denominator of 2 and 4.
61Find the least common denominator of 12 and 3.
62Find the least common denominator of 10 and 7.
63Find the least common denominator of 5 and 12.
64Find the least common denominator of 6 and 8.
65Find the least common denominator of 13 and 4.
66Find the least common denominator of 9 and 7.
67Find the least common denominator of 11 and 12.
68Find the least common denominator of 11 and 8.
69Find the least common denominator of 4 and 14.
70Find the least common denominator of 7 and 10.
71Find the least common denominator of 11 and 15.
72Find the least common denominator of 14 and 8.
73Find the least common denominator of 3 and 10.
74Find the least common denominator of 12 and 2.
75Find the least common denominator of 11 and 6.
76Find the least common denominator of 11 and 9.
77Find the least common denominator of 12 and 12.
78Find the least common denominator of 10 and 13.
79Find the least common denominator of 12 and 15.
80Find the least common denominator of 3 and 13.
81Find the least common denominator of 3 and 12.
82Find the least common denominator of 6 and 9.
83Find the least common denominator of 12 and 9.
84Find the least common denominator of 4 and 9.
85Find the least common denominator of 4 and 8.
86Find the least common denominator of 10 and 3.
87Find the least common denominator of 7 and 13.
88Find the least common denominator of 15 and 4.
89Find the least common denominator of 2 and 10.
90Find the least common denominator of 10 and 4.
91Find the least common denominator of 2 and 12.
92Find the least common denominator of 7 and 14.
93Find the least common denominator of 9 and 11.
94Find the least common denominator of 13 and 14.
95Find the least common denominator of 9 and 2.
96Find the least common denominator of 15 and 14.
97Find the least common denominator of 12 and 11.
98Find the least common denominator of 5 and 6.
99Find the least common denominator of 9 and 5.
100Find the least common denominator of 12 and 14.
101Find the least common denominator of 2 and 14.
102Find the least common denominator of 9 and 10.
103Find the least common denominator of 10 and 8.
104Find the least common denominator of 7 and 6.
105Find the least common denominator of 8 and 3.
106Find the least common denominator of 15 and 9.
107Find the least common denominator of 4 and 10.
108Find the least common denominator of 8 and 5.
109Find the least common denominator of 5 and 5.
110Find the least common denominator of 4 and 2.
111Find the least common denominator of 12 and 5.
112Find the least common denominator of 6 and 3.
113Find the least common denominator of 5 and 13.
114Find the least common denominator of 2 and 3.
115Find the least common denominator of 14 and 2.
116Find the least common denominator of 10 and 5.
117Find the least common denominator of 9 and 14.
118Find the least common denominator of 6 and 13.
119Find the least common denominator of 15 and 15.
120Find the least common denominator of 11 and 11.
121Find the least common denominator of 12 and 10.
122Find the least common denominator of 7 and 4.
123Find the least common denominator of 4 and 5.
124Find the least common denominator of 6 and 14.
125Find the least common denominator of 10 and 10.
126Find the least common denominator of 9 and 4.
127Find the least common denominator of 9 and 6.
128Find the least common denominator of 9 and 15.
129Find the least common denominator of 13 and 2.
130Find the least common denominator of 3 and 11.
131Find the least common denominator of 14 and 3.
132Find the least common denominator of 10 and 15.
133Find the least common denominator of 15 and 12.
134Find the least common denominator of 3 and 3.
135Find the least common denominator of 14 and 13.
136Find the least common denominator of 15 and 2.
137Find the least common denominator of 2 and 2.
138Find the least common denominator of 4 and 7.
139Find the least common denominator of 11 and 7.
140Find the least common denominator of 10 and 9.
141Find the least common denominator of 2 and 6.
142Find the least common denominator of 10 and 12.
143Find the least common denominator of 15 and 11.
144Find the least common denominator of 5 and 3.
145Find the least common denominator of 13 and 6.
146Find the least common denominator of 15 and 6.
147Find the least common denominator of 14 and 12.
148Find the least common denominator of 15 and 7.
149Find the least common denominator of 15 and 3.
150Find the least common denominator of 2 and 13.
151Find the least common denominator of 10 and 11.
152Find the least common denominator of 6 and 11.
153Find the least common denominator of 5 and 2.
154Find the least common denominator of 14 and 10.
155Find the least common denominator of 9 and 8.
156Find the least common denominator of 4 and 6.
157Find the least common denominator of 13 and 5.
158Find the least common denominator of 6 and 2.
159Find the least common denominator of 5 and 14.
160Find the least common denominator of 12 and 7.
161Find the least common denominator of 6 and 5.
162Find the least common denominator of 6 and 10.
163Find the least common denominator of 6 and 6.
164Find the least common denominator of 12 and 8.
165Find the least common denominator of 6 and 7.
166Find the least common denominator of 13 and 12.
167Find the least common denominator of 3 and 8.
168Find the least common denominator of 6 and 12.
169Find the least common denominator of 5 and 9.
170Find the least common denominator of 13 and 8.
171Find the least common denominator of 4 and 4.
172Find the least common denominator of 8 and 6.
173Find the least common denominator of 15 and 13.
174Find the least common denominator of 7 and 9.
175Find the least common denominator of 8 and 2.
176Find the least common denominator of 5 and 10.
177Find the least common denominator of 13 and 7.
178Find the least common denominator of 3 and 9.
179Find the least common denominator of 8 and 11.
180Find the least common denominator of 8 and 9.
181Find the least common denominator of 12 and 6.
182Find the least common denominator of 13 and 3.
183Find the least common denominator of 8 and 15.
184Find the least common denominator of 9 and 13.
185Find the least common denominator of 11 and 10.
186Find the least common denominator of 8 and 14.
187Find the least common denominator of 2 and 5.
188Find the least common denominator of 7 and 3.
189Find the least common denominator of 10 and 14.
190Find the least common denominator of 5 and 4.
191Find the least common denominator of 12 and 13.
192Find the least common denominator of 8 and 10.
193Find the least common denominator of 2 and 11.
194Find the least common denominator of 7 and 15.
195Find the least common denominator of 11 and 3.
196Find the least common denominator of 11 and 14.