1樓:潛訪文
(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-(0.5-0.25)]×0.6,=[1-0.25]×0.6,
=0.75×0.6,
=0.45.
用遞等式進行計算,能簡便的要簡便簡便計算. 0.25×(0.4+40) 0.67+1.28+9.33+0.72 3.18-
2樓:三方
(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-(0.5-0.25)]×0.6,=[1-0.25]×0.6,
=0.75×0.6,
=0.45.
遞等式計算,能簡便計算的一定要簡便計算.25×40.1 12.5×3.2 100.d8÷d (0.25+0.25+0.2
3樓:鄭雨328丶
(1)25×45.1
=25×(45+5.1),
=25×45+25×5.1,
=155+2.5,
=152.5;
(2)12.5×手.2
=12.5×5.8×4,
=15×4,
=45;
(手)155.t8÷t
=(tt+1.t8)÷t.
=tt÷t+1.t8÷t,
=11+5.22,
=11.22;
(4)(5.25+5.25+5.25)×4=手×(5.25×4),
=手×1,
=手;(5)5.84÷2.5÷5.4
=5.84÷(2.5×5.4),
=5.84÷1,
=5.84.
遞等式計算,能簡便計算的一定要簡便計算.25×40.1 12.5×3.2 100.98÷9 (0.25+0.25+0.25)×4
4樓:手機使用者
(1)25×40.1
=25×(zhi40+0.1),
dao=25×40+25×0.1,
=100+2.5,
=102.5;專
(2)12.5×3.2
=12.5×0.8×4,
=10×4,
=40;
(3)100.98÷9
=(99+1.98)÷9.屬
=99÷9+1.98÷9,
=11+0.22,
=11.22;
(4)(0.25+0.25+0.25)×4=3×(0.25×4),
=3×1,
=3;(5)5.64÷2.5÷0.4
=5.64÷(2.5×0.4),
=5.64÷1,
=5.64.
用遞等式進行計算,能簡便的要簡便簡便計算
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 0.33,1.6...
用簡便方法遞等式計算,遞等式計算能簡便的用簡便方法計算謝謝
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 回50 49 48 47 答 46 45 44 43 42 41 40 39 38 37 36 35 4 4 4 4 16 50 49 48 47 46 45 444 43 42 41 40 39 38 ...
遞等式計算,能簡便的要簡便
1 25 32 0.25 25 4 2 4 0.25 25 4 4 0.25 2 100 1 2 200 2 0.25 0.4 40 0.25 0.4 40 0.25 0.1 10 10.1 3 0.67 1.28 9.33 0.72 0.67 9.33 1.28 0.72 10 2 12 4 3....