Greatest Common Factors
Find the Greatest Common Factor (GCF) of: 36 and 28.
The GCF is 4.
Find the Least Common Multiple (LCM) of: 12 and 14.
The LCM is 84.
24 ÷ 3 x (4 - 3) + 7 =
15
560
1
True or False. 1 and 0 are prime numbers.
False
Find the Greatest Common Factor (GCF) of: 115 and 25.
The GCF is 5.
Find the Least Common Multiple (LCM) of: 16 and 22.
The LCM is 176.
5 x (7 -2) + (8+1) = ?
34
0.34
0.0081
Find the Greatest Common Factor (GCF) of: 330 and 60.
The GCF is 30.
Find the Least Common Multiple (LCM) of: 220 and 50.
The LCM is 1100
(14 + 2 x 2)2 - 162
68
Evaluate: (2/3)3
8/27
Find the Greatest Common Factor (GCF) of: 27, 36, and 60.
The GCF is 3.
Find the Least Common Multiple (LCM) of: 15, 30, and 65.
The LCM is 390.
10.75 - [3.25 + 3 of (19.45 – 2.65 × 6.75)]
1.41
Evaluate the expression:
10 x 122
1,440
The fruit seller needs to pack some fruit in baskets to be sold before New Year’s Day. There were 45 oranges, 54 bundles of grapes and 27 melons in the stock room which needed to be packed. Each basket needed to have the same number of pieces of fruit in it. What is the greatest number of baskets of fruit the fruit seller will pack? How many oranges are there in each basket?
3 baskets, 5 oranges in each
The 3 bells ring at the factory at intervals of 3, 6 and 10 minutes simultaneously starting at 8:00 in the morning. At what time will the three bells ring together at the same time?
8:30 AM
[ (7 − 5) 2 ÷ 2 ] × (3 + 4 + 10) = ?
34
Evaluate: 153
3,375
Sara has 84 red flowers, 42 blue flowers and 112 yellow flowers. She wants to make bouquets with the same number of each color flower in each bouquet. What is the greatest number of bouquets she can make? How many of each flower will be in each bouquet?
The greatest number of bouquets she can make is 14. There will be 6 red, 3 blue, and 8 yellow in each bouquet.
The 3 lighthouses flash at different times – one every 20 minutes, one every 40 minutes and one every 50 minutes. If the three lighthouses came on at 6:00 in the evening, at what time will the three lighthouses flash again at the same time?
Every 200 minutes, or 3 hours. So, the next time will be at 9:20 PM
2 x 0.8 + 1.5 x 1.75
4.225
0.36 x 108
36,000,000