简 便 计 算
×6.6＋2.5× －－ 4.6+++5.4 ×(－÷)
2.8++7.2+ +2.25++ ++ －+
+－++ 0.75+++0.375 ＋+++
－(+) 5-- 48.3-- ×4.25+÷6
0.625×0.5++×62.5% ×÷ 2.5×(+++)
22×+25×75%-7×0.75 0.25×63.5－× ×2.5-×
+3.125++ +(-1.8) (111+999) ÷[56×(-)]
49.5×-(50-)×0.6 ×+÷+ 45×(+－0.6)
897×－37.5%+104×0.375 ×(－5.375) 3.5×+1.25×+3.8÷
71×99 3755+2996 8439+1001
446+295 888+999 1125-996
299×101 563×999 2100÷20
6÷0.25 72×156-56×72 25×32×125
709×99+709 0.25×48 2.5×0.4×2
2×6.6+2.5×6 75.3×99+75.3
4.6×3.7+54×0.37 0.125×+×8.25+12.5%
11―6―1 15―4.25―5
19.82―6.57―3.43 4.6+3+6+5.4
4+2.25+5+7 9.63÷2.5÷4
8.37-3.25-(1.37+1.75)