我能算得又对又快.660÷22= 130×40= 540÷60= 6.25+0.75= 8×6×125=750÷15= 689+121= 7.04×100= 1.45+3.5= 24×5﹣25×4=
(562×397)÷(281×397)= .
29×12+29×13+29×25+29×10= .
14.8×6.3﹣6.3×6.5+8.3×3.7= .
3.2+4.57= 407+11.3+5.3= 0.25×(44﹣8)= 0.9+99×0.9= 6.38×8×125%= 10÷0.1﹣0.1÷10= 7.9×4+2.7= 4﹣4×0.6= .
能简算的要简算×7+÷(+)×563÷﹣÷3÷[(+)×](5﹣﹣)÷.