90, 180, 270, 360, 450
10
The GCF of 30 and 20 is 10. The GCF of 40 and 20 is 20.
5: 5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100,105,110.10: 10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,170,180,190.
The LCM of 8, 10, and 20 is 40. Multiples of 8: 8, 16, 24, 32, 40, 48...... Multiples of 10: 10, 20, 30, 40, 50, 60...... Multiples of 20: 20, 40, 60, 80 The smallest number that all three numbers go into evenly is 40. Therefore the LCM of 8, 10, and 20 is 40.
These may help you answer your questions: 1, 2, 4, 5, 8, 10, 20 and 40.
|-20 - (-40)| = 20 |-20 - 10| = 30 -20 is closer to -40 than 10.
40 (+20, -10, +30 ,-20)
50 + 40 + 40 + 40 + 30 + 30 + 20 + 10 = 260
22.5
90, 180, 270, 360, 450
Greatest common factor of 20 30 and 40 is 10.
30
Take your pick; 10 and 20, 10 and 30, 10 and 40, 10 and 50, 10 and 60, 10 and 70, 10 and 80, 10 and 90, 20 and 30, 20 and 50, 20 and 70, 20 and 90, 30 and 40, 30 and 50, 30 and 70, 30 and 80, 40 and 50, 40 and 70, 40 and 90, 50 and 60, 50 and 70, 50 and 80 50 and 90, 60 and 70, 70 and 80, 70 and 90, 80 and 90.
10 and any multiple of 10 (20, 30, 40, etc) 20 and 30, 40 and 90, 60 and 70
5w - 20 -40 ...... -105w - 30 -40 ...... -105w - 40 -40 ...... +205w - 50 -40 ...... +10/+2010w - 30 -30/-20 ...... +4010w - 40 -30 ...... +5010w - 50 -30 ...... +5015w - 40 -22/-15 ...... +5015w - 50 -22 ...... +5020w - 40 -10 ...... +5020w - 50 -10 ...... +50
5w - 20 -40 ...... -105w - 30 -40 ...... -105w - 40 -40 ...... +205w - 50 -40 ...... +10/+2010w - 30 -30/-20 ...... +4010w - 40 -30 ...... +5010w - 50 -30 ...... +5015w - 40 -22/-15 ...... +5015w - 50 -22 ...... +5020w - 40 -10 ...... +5020w - 50 -10 ...... +50