So now you can solve 5%, 10%, 15%, and 50% percentage
problems with no trouble at all. Congratulations, you are already far ahead of
most people! We can now take this skill and use it to calculate any common
percentage! Most percentages are either multiples of 10 or 5. You’ve seen the
stores that offer 75% off or even 90% off, now we’ll take our skill and use it
to quickly solve these easy percentage problems.
95% of 2500 =
- Break
95% into 100% – 5%
- 100%
of any number is itself, so 2500
- 5% is
half & 10% -> 2250 -> 225
- Put
them back together: 100% – 5% –> 2500 – 225 = 2375
75% of 880 =
- Split
75% into 50% + 25%
- 50% is
half, so 880 ÷ 2 = 440
- 25% is
half of 50%, so take your previous answer and half it again! 440 ÷ 2
= 220
- Put
them back together: 440+220=660
This simple technique will work for any percentage
problem that ends in 0 or 5, even those greater than 100%!! The
greatest part is that we can now use this same breaking up skill to calculate
ANY percentage problem.
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