40 (+20, -10, +30 ,-20)
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.
25
10 plus 20 plus 30plus 40 plus 50 equals 150 because 50 plus 40 equals 90 plus 30 =120+20= 140 then + 10 = 150
10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, . . .5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, . . .
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.
30 + 40 + 10 + 40 = 120120/4 = 30Average = 30
40 (+20, -10, +30 ,-20)
50 + 40 + 40 + 40 + 30 + 30 + 20 + 10 = 260
90, 180, 270, 360, 450
Greatest common factor of 20 30 and 40 is 10.
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
10, 20, 30, 40, 50, 60, and so on 10, 20, 30, 40, 50 The first ten multiples of ten are 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100. 10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,170,180,190.........................……and keep on adding 10.