Divide it by ten. :o)
70
143
4200 is ten times 420
28
The total number of multiples is infinite. Here are the first 10: 420, 840, 1260, 1680, 2100, 2520, 2940, 3360, 3780, 4200 . . .
70
The LCM is 4200.
420
143
60
84
4200 is ten times 420
They are both in the units place value column
One tenth of 4200 micrometers is 420 micrometers.
Any number in the 42 times table. E.g. 84, 420, 4200 etc.
28
1680040% of 4200 = 1680= 40% * 4200= 40%/100% * 4200= 4 * 420= 1680