Question

1.25÷(1.25×0.125)-0.5×4

Answer 1

0.125-0.5×4=0.125-2=-1.875

0.8×1×4.8=3.84

(20.8-20)÷2.5×40=0.8×40÷2.5=32÷2.5=12.8

6.3×(1.73+1.8+6.47）=6.3×10=63

4-0.25+0.25=4

（11-1）×12×13-260=1560-260=1300