1、小学数学四则运算——简便运算大汇总 简便运算 4+3.2+5+6.8 25×(8×0.4)×1.25 7-(2-) (++)×72 93.5÷3÷ 1125-997 998+1246+9989 (8700+870+87)÷87 125×8.8 1.3+4.25+3.7+3.75 17.
2、15-(3.5-2.85) 3.4×99+3.4 4.8×1.01 0.4×(2.5÷73) (1.6+1.6+1.6+1.6)×25 (+-)÷ 12.3-2.45-5.7-4.55 ÷2+× 0.125×0.25×64 64.2×87+0.642×1300 78×36+7.8×741-7
3、 ×17+×8 ×+0.125×+0.5 2.42÷+4.58×-4÷3 25÷100 4.25-3-(2-1) 3.8÷3.9+3.9÷0.1+0.1÷3.9 12.1-(+)×105
4、 -(+ )× × - ÷4 ×[1÷( + )] [ -(- )]× + × + 1 - ÷ - × + ÷4 5 -( ÷+ ) 4-(2.5+1.9)×(0.5-0.5) 4-2.5+1.9×(0.5-0
5、5) 4-2.5+1.9×0.5-0.5 [4-(2.5+1.9×0.5)]-0.5 [4-(2.5+1.9) ×((0.5-0.5) [4-(2.5+1.9) ×0.5]-0.5 12-4-2-5-12.5% 0.125×+×8.25+12.5% (+)÷ 2.5××0.4×2 15-2.25-7 ×[+(-)÷]
6、10×[(-0.5) ÷] (2.7-4.25×)÷2.8× 1.25+1×7.4+125%÷ 10-4.68÷7.2+0.05 1×(5÷-÷5) 18.09×[(1.5+2)÷3.75-] 0.84÷0.3÷(1.96×18.9) -(0.15+) ÷1.8 1325+540÷18×15 2.5÷8+9.5×+4×0.125 [2.1+7÷(3-1.625)] ×1 2.5
7、×-2.1÷+9.63 (7+7×2+7)÷4 3.8+1+6.2+3 ×[(4-3.5) ÷] (2+-1)×12 2.5÷8+3.5×+0.125 (9.5+9+9+9.5) ×12 3-(1+÷1)×1 [(0.05+)÷0.25-]×125% 5.35×0.25+2.65× (3+-2)÷(1÷80%) (4.2÷0.7+6×)× 0.8×32.5×12.5 7.6×9.9
8、×0.01 8.32×0.58-0.32×0.58 1.25÷5+0.25×20 10.69-2.5×2.4 0.3×2.5×0.04 8.4×57+8.4×42+8.4 13÷0.65÷2 7.2×10.1-7.2 1.2×2.5+2.8×2.5 32×0.65+3.2×3.5 ×÷15 25×(4+) 60×(+-) ×0.35+0.65÷ 0.25×37.5%+× 25%×+×25% ÷÷ ×0.35+0.65÷ ÷4÷ +÷
9、 5÷-÷5 2-÷- ×1000- (+)×15 ×+÷9 32÷÷ +++ +(+) ÷(3--) ×× (+)×28 ×+× 3-÷ ×÷ × + ÷11 (-)÷ ()÷
10、 ()-()-() ()-() 12.06+5.07+2.94 30.34+9.76-10.34 ×3÷×3 25×7×4 34÷4÷1.7 1.25÷×0.8 17+-7 1-- , 41.06-19.72-20.28 7-3+ 8+2-
11、 11+7+3 700÷14÷5 18.6÷2.5÷0.4 13×÷ 29÷× 5.68+(5.39+4.32) 19.68-(2.97+9.68) 7+(-) 5-(-) 1.25×(8÷0.5) 0.25×(4×1.2) 1.25×(213×0.8) 0.74÷(71×) 24×(---) (12+) ×7 (7-)×
12、9.3÷(4÷) 0.92×1.41+0.92×8.59 ×-× 1.3×11.6-1.6×1.3 ×11.6+18.4× 9999+999+99+9 4821-998 3.2×12.5×25 1.25×88 7.6÷0.25 3.5÷0.125 3.8×9.9+0.38 ×103-×2- (13×8)×125 3700-2185-815
13、 20×(17×5) 4×7×25×3 14×20×5 25×(40×32) (5×7)×80 4×9×25 8×14×125×6 16×25×5×4 259+468+741+532 23×4×5 40×7×3×5 25×6×4×5 25×(6×4) (8×6)×125 102×7.3÷5.1 3.6×0.25 2.6×9.9 1.06×2.5×4






