1722+253+278+447=?
please help me out guys

Question

1722+253+278+447=?
please help me out guys

lxelle · Answer

1722+253 = 1975 
1975+ 278 = 2253
2253+ 447 =?

anonymous · Answer

2700

rational · Answer

1722+253+278+447

(1722+278) + (253+447)

(1700+200+100) + (200+400+100)

(2000) + (700)

(2700)

beccaboo333 · Answer

I can't tell if you really needed help or are just that bored and posted a random question.

anonymous · Answer

rational · Answer

you need to group them in a way that allows u to calculate it mentally without using pen/paper/google/calculator/others

lxelle · Answer

Yes you are right.

anonymous · Answer

thanks guys a lot

anonymous · Answer

how it takes u to do such operation ? @rational

anonymous · Answer

mentally :O

rational · Answer

the problem is designed to be worked mentally

anonymous · Answer

ik >.<
im just asking cuz im sort of slow

rational · Answer

if I ask you to calculate :

99 + 101

would you use calculator ?

rational · Answer

how about

111 +  89

?

anonymous · Answer

sure i would not :P
but see ur very smart in noting this >.<
i only note it when u posted  ( just asking )
i dont have that talent to see it quick