Least Common Multiple
Tell rather the ratios are equivalent . Write yes or no 16;40; 8;20
no
Tell rather the ratios are equivalent . Write yes or no 3/7; 10/21
no
Tell rather the ratios are equivalent . Write yes or no 45 :50; 5:10
no
Tell rather the ratios are equivalent . Write yes or no 12/18; 6/9
yes
Tell rather the ratios are equivalent . Write yes or no 1:4; 5:20
yes
Tell rather the ratios are equivalent . Write yes or no 24/36; 2/3
yes
Tell rather the ratios are equivalent . Write yes or no 3/4: 6/8
yes
Tell rather the ratios are equivalent . Write yes or no 5:6; 10:15
yes
The LCM of a pair of numbers is 12. The sum of the numbers is 10. What are the numbers?
4, 6
Write two ration that are equivalent to the given ratio. 2/3
4/6 : 6/9
Find the LCD for each group of numbers 8,20
40
Write the first three multiples excluding the number itself (20)
40,60,80
l = 11mm, w= 4 mm
44mm2
Find the LCD for each group of numbers 12, 16
48
One model train can complete its track in 2 minutes. The other model train takes 3 minutes. If the two trains start at ythe same time, when will they both be at the starting point of their tracks at the same time?
6 minutes after they start.
Find the LCD for each group of numbers 12,15,20
60
Find the LCD for each group of numbers 25, 120
600
Write two ration that are equivalent to the given ratio 3 to 1
6: 2 , 1 :3
The length of a rug is 3 yards. The width is 2 yards. What is the area of the rug?
6yd2
Find the LCD for each group of numbers 7, 9
72
Find the LCD for each group of numbers 15, 25
75
Write the first three multiples excluding the number itself. (4)
8, 12, 16
Write two ration that are equivalent to the given ratio 4:5
8:10 , 12:15
l = 9m, w = 0.5
9.5m2
Find the LCD for each group of numbers 16,24, 32
96
The area of a rectangle is 27 cm2. If the width is 3cm, what is the length?
9cm
l = 7 cm, w = 3cm
21cm2
Write the first three multiples excluding the number itself (11)
22,33,44
Find the LCD for each group of numbers 3, 8
24
Find the LCD for each group of numbers 3,4,24
24
Find the LCD for each group of numbers 15,20, 80
240
Write the first three multiples excluding the number itself (13)
26,39,52
Find the LCD for each group of numbers 4,7
28
Donald wants to buy the same number of apples and pears. Apples are sold in packages of 4 and pears are sold in packages of 7. What is the least number of apples he can buy?
28 apples
Find the LCD for each group of numbers 6, 15
30
l = 5 in., w =6 in.
30 in2
Write the first three multiples excluding the number itself (15)
30,45,60
l = 8 ft., w =4 ft
32ft2
Write the first three multiples excluding the number itself (17)
34,51,68
l = 5.6 cm, w = 6.3 cm
35.28 cm
Write the first three multiples excluding the number itself (18)
36,54,72
A rug is 10 ft long and 8 feet wide. What is the perimeter of the rug?
360 ft2
Write the first three multiples excluding the number itself (19)
38,57,76
The area if a rectangle is 4ft2. If the length us 5 ft, what is the width?
3ft .08inches
A carpet costs $8.95 per square yard. What is the cost of carpeting for a room 12 feet long and 9 feet wide?
$107.40
Find the LCD for each group of numbers 20, 25
100
Write two ration that are equivalent to the given ratio 5 to 6
10:12 , 15:18
Find the LCD for each group of numbers 2,3,4
12
Write two ration that are equivalent to the given ratio 6/7
12:14, 19
Write the first three multiples excluding the number itself (7)
14,21,28
l = 94ft, w = 15ft
1410ft2
Write the first three multiples excluding the number itself (8)
16,24,32,64
l = 12yd, w =14 yd
169ydm2
Find the LCD for each group of numbers 2,18
18
Vanessa's room is 15 feet long and 12 feet wide. What is the area of her room?
180 ft2
Write two ration that are equivalent to the given ratio 9/2
18:4 :4
Write two ration that are equivalent to the given ratio 8:5
18:4, 27:6
Write two ration that are equivalent to the given ratio 4 to 9
18:8
The LCM of a pair of numbers is 8. The difference is between the numbers is 6. What are the numbers?
2, 8
