12.7381
0.0286
70
To divide 4200 by 60 using mental math, you can simplify the calculation by breaking it down. First, divide both numbers by 10: 4200 ÷ 10 = 420 and 60 ÷ 10 = 6. Now, you need to calculate 420 ÷ 6, which is 70. Therefore, the quotient of 4200 divided by 60 is 70.
To calculate 5% of 4200, you multiply 4200 by 0.05. This gives you 210. Therefore, 5% of 4200 is 210.
4200*0.40=1680 4200-1680=2520
4.2
60
100
140
0.0286
0.0198
70
8.4
53500
It is then 53500
168
4200