1 脱式计算 175-75÷ 25 68+35× 13 725-(125+237) (114+166)÷ 35 432÷ (9× 8) 189-60+40 216+305/5 47+236+64 5+25× 44 25× 63× 4 9000÷ 125 99× 11 2800÷ 100+789 75÷ 〔138÷ (100-54)〕 85× (95-1440÷ 24) 240× 78÷ (154-115) 80400-(4300+870÷ 15) 1437× 27+27× 563 [75-(12+18)]÷ 15 (6.8-6.8× 0.55)÷ 8.5 7.2÷ 0.8-1.2× 5 2 (93+25×21)×9 507÷13×63+498 (39-21)×(396÷6) 704×25-509 25×32×125 32×(25+125) 25×(24+16) 178×99+178 79×42+79+79×57 138×25×4 (13×125)×(3×8) 32×(25+125) (12+24+80)×50 25×32×125 178×101-178 102×76 58×98 75×99+2×75 83×102-83×2 50×(34×4)×3 25×(24+16) 178×99+178 三、方程式计算 2x+8=16 x÷5=10 x+7x=8 9x-3x=6 4÷5x=20 2x-6=12 x-5÷6=7 1÷2x-8=4 3 3165 x 3173 x 71176 x 9172 x 91121 x 5335 x 9183 x 61335 x 1 1372 x 71245 x 9271 x 1 0751 x 61195 x 91165 x 321 21 x 2 61 51 31 2 x 61525 x 1 811 23 x 下面各题怎样算简便就怎样算。 6.9+4.8+3.1 0.456+6.22+3.78 15.89+(6.75-5.89) 4 4.02+5.4+0.98 5.17-1.8-3.2 13.75-(3.75+6.48) 3.68+7.56-2.68 7.85+2.34-0.85+4.66 35.6-1.8-15.6-7.2 3.82+2.9+0.18+9.1 9.6+4.8-3.6 7.14-0.53-2.47 66.86-8.66-1.34 0.25×16.2×4 (1.25-0.125)×8 3.6×102 3.72×3.5+6.28×3.5 36.8-3.9-6.1 15.6×13.1-15.6-15.6×2.1 4.8×7.8+78×0.52 32+4.9-0.9 4.8×100.1 56.5×9.9+56.5 7.09×10.8-0.8×7.09 25.48-(9.4-0.52) 4.2÷0.2 ÷0.5 320÷1.25÷8 18.76×9.9+18.76 3.52÷2.5÷0.4 3.9-4.1+6.1-5.9 5 17.8÷(1.78×4) 0.49÷0.049÷10 1.25×2.5×32 3.83×4.56+3.83×5.44 4.36×12.5×8 9.7×99+9.7 27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 3.2×0.25×12.5 (45.9-32.7)÷8÷0.125 3.14×0.68+31.4×0.032 5.6÷1.25÷0.8÷2.5÷0.4 7.2×0.2+2.4×1.4 33×66+33×34 7.74×(2.8-1.3)+1.5×2.26 3.9×2.7+3.9×7.3 18-1.8÷0.125÷0.8 12.7×9.9+1.27 21×(9.3-3.7)-5.6 15.02-6.8-1.02 5.4×11-5.4 46×57+23×86 13.7×0.25-3.7÷4 2.22×9.9+6.66×6.7 6 101×0.87-0.91×87 10.7×16.1-15.1×10.7 0.79×199-0.79×99 3.07-0.38-1.62 1.29+3.7+2.71+6.3 8-2.45-1.55 3.25+1.79-0.59+1.75 23.4-0.8-13.4-7.2 125×64 0.8×(4.3×1.25) 12+3.12×99 28.6×101-28.6 14-7.32-2.68 2.64+8.67+7.36+11.33 70÷280 (2.5-0.25)×0.4 9.16×1.5-0.5×9.16 3.6-3.6×0.5