70
Well, isn't that a happy little math problem! To find one fifth of 420, you simply divide 420 by 5. So, 420 divided by 5 equals 84. That's the magic number you're looking for, a peaceful little fraction of the whole.
4200 is ten times 420
143
70 x 6
One tenth of 4200 micrometers is 420 micrometers. To find one tenth of a number, you divide it by 10.
70
The LCM is 4200.
420
4200 is ten times 420
143
60
70 x 6
84
They are both in the units place value column
Any number in the 42 times table. E.g. 84, 420, 4200 etc.
1680040% of 4200 = 1680= 40% * 4200= 40%/100% * 4200= 4 * 420= 1680