1、計算以下各題，能簡算的要簡算。× ×÷ ×÷÷【×】 ÷ ÷【×】 ×÷ ×88 1348× × ÷7× ÷3× × ××【1】÷ ÷× ÷× ×12 2÷ 99××÷ ×÷ 45×÷ ÷ ×4 50.125 48

2、15;( 2)÷ 23 × ÷ ×7 ×11 5÷( )× ×23 ×67 ×÷ ÷1× ×【÷】 ×÷ ×× 9×÷ ×8 84× × ÷×8 ×÷ 4× ÷× 14÷1 14÷ 14× 14÷ ×× ÷×

3、÷÷ ×÷ ×÷× ×1÷÷1 ×35× 3× ×× ÷ ××【÷】 3 ×99÷×× ×5644× ×8×× 16×4÷ 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×

4、;0.5)-0.54-(2.5+1.9) ×(0.5-0.5) 4-(2.5+1.9) ×0.5-0.5 12-4-2-5 0.125×+×8.25 (+)÷ 2.5××0.4×215-2.25-7 ×+(-)÷ 10×(-0.5) ÷ ( 27) (2.7-4.25×)÷2.8× 1.25+1×7.4+ ()×15×11 1×(5÷-÷5) 18.09×(1.5+2)

5、7;3.75- 2.1+7÷(3-1.625) ×10.84÷0.3÷(1.96×18.9) -(0.15+) ÷1.81325+540÷18×15 2.5×-2.1÷+9.63 (7+7×2+7)÷43.8+1+6.2+3×(4-3.5) ÷ (2+-1)×122.5÷8+3.5×+0.125(9.5+9+9+9.5) ×12 3-(1+÷1)×1 2.5÷8+9.5×+4&

6、#215;0.125 (0.05+)÷0.25-×0.125 5.35×0.25+2.65× (3+-2)÷(1÷0.8) (4.2÷0.7+6×)× 48×( 2)÷ ×23 ×67 ×÷ 4-2.5+1.5 4-2+1.5×2 9-(2.5+1.9) ×2-0.5 0.125×+×9.25(+)÷ 2.5××0.4×2 15-2.25-7 ×+(-)&#

7、247; 10×(-0.5) ÷ (2.7-4.25×)÷2.8×18×(1.75+2)÷3.75- 23 × ÷ ×7 ×11 (0.45+) ÷1.8 5÷( )× 2.5×-2.1×+9.72.5÷8+9.5×+4×0.125 7×(3-1. 5) ÷1 2÷ -2.1×+9.63 (7+7×2+7)÷4 ×(4-3.5) 

8、7; (2+-1)×122.5÷8+4.5×+0.125 (9.5+9+9+9.5) × 3-(1×1)+ (0.25+)÷0.25- (4.2÷0.7+5×)× 5.35×0.25+2.65×(3+-2)÷(1÷6) 8÷ (3+) 8×0.25 +2× (0.45+) ÷3 (+)÷(0.45+) (5÷-121)×5÷0.25-12÷ 5÷0.25-12

9、5;÷ (+)÷7 2+8+(3+)÷6 7+(2+1)÷(6-2) 8×0.25 +1.5×+0.5×0.253 ×+× ×+÷ 18×+ ×7+×5 ×24×+÷ ÷+× ×7+×5 ×24 ×+÷ ÷+× (32×17)÷ 25÷ ×× 21××21× 99÷9 ×÷ ÷× ×30 3÷ ×÷ 4 ×58×41 ×× ×÷ ÷÷