用递等式计算(能简算的要简算)0.2×0.25+2.人×0.25&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf; 0.65×004&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf; 06.人÷40÷0.25 0.2×0.25×2.5&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf; 2.人×0.6+2人×0.64 0.25×人.0人&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf; 5.6÷0.05&n0sf;&n0sf;&n0sf;&n0sf;&n0sf;&n0sf; 20.三+00.5÷(5.2-4.5)
①一.7×0.75+7.小×0.75 =0.75×(一.7+7.小) =0.75×4 =一; ②0.65×一04 =0.65×(一00+4) =0.65×一00+0.65×4 =65+7.6 =67.6; ③一6.小÷40÷0.75 =一6.小÷(40×0.75) =一6.小÷一0 =一.6小; ④3.7×一.75×7.5 =小×0.4×一.75×7.5 =(小×一.75)×(0.4×7.5) =一0×一 =一0; ⑤7.小×3.6+7小×0.64 =7小×0.36+7小×0.64 =7小×(0.36+0.64) =7小×一 =7小; ⑥一.75×小.0小 =一.75×(小+0.0小) =一.75×小+一.75×0.0小 =一0+0.一 =一0.一; ⑦5.6÷0.35 =5.6÷7÷0.05 =0.小÷0.05 =一6; ⑧70.9+一0.5÷(5.7-4.5) =70.9+一0.5÷0.7 =70.9+一5 =35.9. |
用递等式计算(能简算的要简算)0.2×0.25+2.人×0.25&n0sf;&n0sf;&n0...
①一.7×0.75+7.小×0.75 =0.75×(一.7+7.小)=0.75×4=一;②0.65×一04 =0.65×(一00+4)=0.65×一00+0.65×4=65+7.6=67.6;③一6.小÷40÷0.75=一6.小÷(40×0.75)=一6.小÷一0=一.6小;④3.7×一.75×7.5 =小×0.4×一.75×7.5=(小×一...
用递等式计算,能简算的要用简便方法计算.?
=2×[1\/4]=[1\/2],10,用递等式计算,能简算的要用简便方法计算.[4\/15]×([3\/8]+[6\/5]÷[8\/5])[8\/25]÷[[4\/9]×(2-[7\/5])]0.6÷4+1.4×0.25.
用递等式进行计算,能简便的要简便简便计算. 0.25×(0.4+40) 0.67+1.2...
(1)0.25×(0.4+40),=0.25×0.4+0.25×40,=0.1+10,=10.1;(2)0.67+1.28+9.33+0.72,=(0.67+9.33)+(1.28+0.72),=10+2,=12;(3)3.18-(0.33+1.18),=3.18-0.33-1.18,=(3.18-1.18)-0.33,=2-0.33,=1.67;(4)[1-(0.5-0...
用递等式计算,能简便计算的要简算.(1)2.01×1.53÷0.18(2)5.86×99.4...
(2)(3)(4)(5)运用乘法分配律解答.解答:解:(1)2.01×1.53÷0.18,=3.0753÷0.18,=17.085;(2)5.86×99.4+5.86×0.6,=5.86×(99.4+0.6),=5.86×100,=586;(3)2.2×2.2+2.2×7.8,=2.2×(2.2+7.8),=2.2×10,=22;(4)0.25×(...
计算下面各题,能用简便算法的用简便算法0.25×1.2+2.8×0.250.65×10...
答案 解析 (1)0.25×1.2+2.8×0.25,运用乘法分配律进行简算;(2)0.65×101,转化为:0.65×(100+1),再运用乘法分配律进行简算;(3)67.8-7.8×4.9,根据小数四则混合运算的顺序,按照小数四则运算的计算法则进行简算;(4)3.2×1.25×2.5,把3.2分解为:0.8×4,再...
用递等式计算,能简算的要写出简算过程.(2.5×6+2.5×4)÷535.6-2.8+4....
用递等式计算,能简算的要写出简算过程.(2.5×6+2.5×4)÷5 35.6-2.8+4.4-7.2 0.25×3.2×12.5 7.5÷(1.5+2.5)0.6×(5+0.6)-1 3.7×1.25-3.7×0.25.答案 解析 (1)先把小括号里面的运算运用乘法分配律简算,再算括号外的除法;(2)运用就加法结合律和...
用递等式计算,能简算的写出过程.(1)(3.14×4+3.14×3+3.14)×12.5(2...
14)×12.5,=3.14×(4+3+1)×12.5,=3.14×8×12.5,=3.14×(8×12.5),=3.14×100,=314;(2)49×[34?(716?0.25)],=49×[34?716+0.25],=49×[34+0.25?716],=49×[1?716],=49×916,=14;(3)70.8-7.28-3.72,=70.8-(7.28+3.72),...
用递等式计算.(能简算的要写出简算过程) (1)1.25×3.2×0.25 (2)6.4...
25×3.2×0.25,=1.25×8×0.4×0.25,=(1.25×8)×(0.4×0.25),=10×0.1,=1;(2)6.4×0.27+3.6×0.27,=(6.4+3.6)×0.27,=10×0.27,=2.7;(3)3.84-0.84×5÷1.5,=3.84-4.2÷1.5,=3.84-2.8,=1.04;(4)2.5×0.99,=2.5...
用递等式计算.(能简算的要写出简算过程) (1)8.5×[(2.36+2.42)÷0.25...
(1)8.5×[(2.36+2.42)÷0.25],=8.5×[4.78÷0.25],=8.5×19.12,=162.52;(2)3.9÷[(1.3+0.6)×6-3.6],=3.9÷[1.3×0.6+0.6×6-3.6],=3.9÷[0.78+3.6-3.6],=3.9÷0.78,=5;(3)4.25×6.3+3.7×4.25,=4.25×(6.3+3....
递等式计算.(能简便的要简算)(1)3÷13+23÷3(2)5.4-(0.4+12×0.25)(3...
(1)3÷13+23÷3,=9+29,=929;(2)5.4-(0.4+12×0.25),=5.4-(0.4+3),=5.4-3.4,=2;(3)47?5.89+1037?4.11,=(47+1037)-(5.89+4.11),=11-10,=1;(4)18×112+1.5×0.875+112,=112×(18+0.875+1),=112×2,=3;(5)(123?58)÷...