Tính nhanh :
a ) 167.89-167.35+54.833
B ) 876.32+56.124+24.876
c ) 5394.768+606.769+5394
d ) 2013.7645+2014.2355-1355
e ) 193.14+193.85+193
f ) 565656.79+797979.56
g ) 167.89-167.35+54.833
h ) 876.32+56.124+24.876
i ) A = 2+5+8+11+......+146+149
k )5394.768-1394.769+5394
g ) 2013.7645+2014.2355-1355
m ) B = 1+4+7+10+....+61+64
giúp tớ hết câu càng tốt , giúp tớ nhé