Question

Tính nhanh

2,76 : 0,25 + 2,76 : 1/5 + 2,76

( 1 - 1/2 ) x ( 1 - 1/3 ) x ( 1 -1/4) x ( 1 - 1/5 )

Answer 1

2,76 : 0,25 + 2,76 : 1/5 + 2,76

= 2,76 x 4 + 2,76 x 5 + 2,76

= 2,76 x ( 4 + 5 + 1 )

= 2,76 x 10

= 27,6

Answer 2

2,76:0.25+2,76:1/5+2,76=2,76:(0,25+1,5+1)=2,76/2,75

Answer 3

a, 2,76;0,25+2,76:1/5+2,76

=2,76x4+2,76x5+2,76x1

=2,76x(4+5+1)

=2,76x     10

=27,6