问题
选择题
计算2.64×7.6388+26.4×(-0.31388)的结果为( )
A.-11.88
B.11.88
C.1.188
D.-1.188
答案
2.64×7.6388+26.4×(-0.31388),
=2.64×7.6388+2.64×10×(-0.31388),
=2.64×(7.6388-3.1388),
=2.64×4.5,
=11.88,
故选:B.
计算2.64×7.6388+26.4×(-0.31388)的结果为( )
A.-11.88
B.11.88
C.1.188
D.-1.188
2.64×7.6388+26.4×(-0.31388),
=2.64×7.6388+2.64×10×(-0.31388),
=2.64×(7.6388-3.1388),
=2.64×4.5,
=11.88,
故选:B.