请运用简便方法计算.
(1)5.7×1.4+1.4×4.3 (2)9.05﹣3.86﹣3.14 (3)6.84×10.1
(4)87×2.5+8.7×75 (5)1+2+3+4+5+6+…+97+98+99 (6)0.7777×0.7+0.1111×5.1.
简便计算,写出简便过程
(1)54×303
(2)7.7×0.73
(3)26.39×36+2.639×830﹣263.9×1.9
(4)272.4×6.2+2724×0.38
(5)2.04×0.25×7.2×12.5.
×125××8 ++×24 ×(﹣)÷
3÷+3÷ 7+8.9+2+6.1 0.36×101
20﹣(5.6+4.8)÷1.3 3.2×(2.15+1.95÷6.5) (+)÷+
36×(+﹣)
1.59×1.9+0.41×1.9﹣1.9
18.6﹣[12﹣0.328×(18.3+6.7)]
63÷[6.5×(3.4﹣3.32)+2.98]
96.12÷[(7﹣6.46)×(43.6+56.4)]
[49.84﹣(53.17﹣14.56)÷27]÷0.47.
计算.
1.8×[24.15÷(10.04﹣6.54)]=
5(x﹣1.6)=41×0.5=
3.42×4.7+0.83×34.2﹣3.42×3=
0.8+9.8+99.8+999.8+9999.8=
脱式计算,能简算得要简算.
5.46÷3.9+4.5×2.3
4.23×9.9+0.423
2.58﹣(3.5﹣2.4)
78÷0.25÷0.4.
试题篮
()