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÷
1. 71×99 2. 3755+2996 3. 8439+1001
4. 446+295 5. 888+999 6. 1125-996
7. 299×101 8. 563×999 9. 2100÷20
10. 6÷0.25 11. 72×156-56×72 12. 25×32×125
13. 709×99+709 ×48 ×0.4×2
16. 2×6.6+2.5×6 17. 75.3×99+75.3
×3.7+54×0.37 19. 0.125×+×8.25+12.5%
20. 11―6―1 21. 15―4.25―5
22. 19.82―6.57―3.43 +3+6+5.4
24. 4+2.25+5+7 25. 9.63÷2.5÷4
26. 8.37-3.25-(1.37+1.75)