You can multiply .4 by 2 and see the answer is .8.
You could also note that 10 percent of 2 is .2
Now 40 percent is 4 ten percents so .2+.2+.2+.2=.8.
Of course the two answers are the same, but the advantage of the second is many people can do it in there heads.
5 percent of 40 = 2 5% of 40 = 5% * 40 = 5%/100% * 40 = 0.05 * 40 = 2
0.5% means 'one half of one percent. Hence 0.5/100 Multiply ( top and bottom) by '10' to remove the decimal point. 5/1000 Of 40 5/1000 X 40/1 Multiply fractions. 200/1000 = Cancel down by '100' 2/10 = 1/5 = 0.2 The answer !!!!!
40 percent
5 percent of 40 = 25% of 40= 5% * 40= 0.05 * 40= 2
40% of 5 = 2
40%
50 percent times 40 = 2050% * 40= 50%/100% * 40= 5/10 * 40= 1/2 * 40= 40/2= 20
40%
2% of 40 = 2% * 40 = 0.02 * 40 = 0.8
2% = 2/100 = 0.02 0.02 x 40 = 0.8 so, 2% of 40 = 0.8
40% = 2/5
40% = 40/100 = 2/5