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3.5x*2.4简便计算

2.4X3.5+6.5÷1.3的简便计算 =3.12/1.3x3.5+6.5/1.3 =(2.12x3.5+3.5+6.5)/1.3 =(7.42+10)/1.3 =17.2/1.3 =13.4

10.5-2.5÷2.4x2.4-3.5=?用简便方法计算 10.5-2.5÷2.4x2.4-3.5 =10.5-2.5-3.5 =10.5-(2.5+3.5) =10.5-6 =4.5

(1)2.64×1.7-2.64×0.7 =2.64×(1.7-0.7) =2.64×1 =2.64 (2)31.5×1.07-3.15×0.7 =3.15×10.7-3.15×0.7 =3.15×(10.7-0.7) =3.15×10 =31.5 (3)2.7×5.7-2.7+5.3×2.7 =2.7×(5.7-1+5.3) =2.7×10 =27 (4)0.625÷0.125×0.8 =(0.625×0.8)×8÷...

7.5x2.4+2.4x2.5 =2.4×(7.5+2.5) =2.4×10 =24 3.72x3.5+6.28x3.5 =3.5×(3.72+6.28) =3.5×10 =35 (4+0.4)x2.5 =4×2.5+0.4×2.5 =10+1 =11 4.2x0.5-1.6x0.5 =(4.2-.1.6)×0.5 =2.6×0.5 =1.3

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408-12×24 = 408 - 288 = 120 (46+28)×60 = 74 x 60 = 4440 42×50-17 = 2100- 17 = 2083 32+105÷5 = 32 + 21 = 53 420×(327-238) = 420 x 89 = 37380 (4121+2389)÷7 = 6510 ÷7 = 930 3.416÷(0.016×35) = 3.416 ÷0.56 = 6.1 0.8×[(10...

=1 3/8+5/8 = 4/9÷2/3 = 2-( )= 2.4÷( )>1 2.求未知数x。...3.5=8 4 ∶ x = 3 ∶ 12 3.用递等式计算(能简算的要用简便方法计算)...

口算1.10-5.4= 2.4÷20= 3.5×200= 4.1.5-0.06= 5.0.75÷15= 6.0.4×0.8= 7.4×0.25= 8.0.36+1.54= 9.1.01×99= 10.420÷35= 11.25×12= 12.135÷0.5= 13.3/4 + 1/4 = 14.2 + 4/9 = 15.3 - 2/3 = 16.3/4 - 1/2= 17.1/6 + 1/2 -1/6 = 18.7....

某车间每天能生产甲种零件120个,或乙种零件100个,或丙种零件200个,甲,乙,丙三种零件分别取3个,2个,1个可配成一套。现要求在30天内生产出最多的成套产品,甲,乙,丙三种零件应该各安排生产多少天? 一、小数一步加、减法应用题 1、一本数...

4、一个梯形的上下底和是2.4厘米,高是X厘米,它的...3.计算下面各题(可简便计算的应简便计算)。(12分...3.87+1.44-0.87+0.56 58.8÷2.1-1.6×3.5 ...

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