计算下面各题,能简算的要简算:(1)4.8*100.1 (2)56.5*9.9+56.5(3)7.09*10.8-0.8*7.09(4)7.2*0.2+2.4*1.4(5)8.9*1.01(6)18.76*9.9+18.76(7)3.52÷2.5÷0.4(8)3.9-4.1+6.1-5.9(9)15.02-6.8-1.02(10)5.4*11-5.4
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计算下面各题,能简算的要简算:(1)4.8*100.1 (2)56.5*9.9+56.5(3)7.09*10.8-0.8*7.09(4)7.2*0.2+2.4*1.4(5)8.9*1.01(6)18.76*9.9+18.76(7)3.52÷2.5÷0.4(8)3.9-4.1+6.1-5.9(9)15.02-6.8-1.02(10)5.4*11-5.4
计算下面各题,能简算的要简算:(1)4.8*100.1 (2)56.5*9.9+56.5(3)7.09*10.8-0.8*7.09
(4)7.2*0.2+2.4*1.4
(5)8.9*1.01
(6)18.76*9.9+18.76
(7)3.52÷2.5÷0.4
(8)3.9-4.1+6.1-5.9
(9)15.02-6.8-1.02
(10)5.4*11-5.4
计算下面各题,能简算的要简算:(1)4.8*100.1 (2)56.5*9.9+56.5(3)7.09*10.8-0.8*7.09(4)7.2*0.2+2.4*1.4(5)8.9*1.01(6)18.76*9.9+18.76(7)3.52÷2.5÷0.4(8)3.9-4.1+6.1-5.9(9)15.02-6.8-1.02(10)5.4*11-5.4
(1)4.8*100+0.48 (2)56.5*10-5.65 (3)7.09*10 (4)2.4*0.6+2.4*1.4=2.4*2 (5)8.9-0.89
(6)18.76*10 (7)3.52*(2.5*0.4) (8)(3.9+6.1)-(4.1+5.9) (9)14-6.8 (10)5.4*10
自己做去
(1)4.8*100+4.8*0.1=480+0.48=480.48 (2)56.5*10+(56.5-5.65)=565+50.85=615.85
(3) 7.09*10=10.9 (4) 2.4*0.6+2.4*1.4=2.4*2=4.8 (5) 8.9+8.9*0.01=8.9+0.089=8.989
(6)18.76*10+(18.76-1.876)=187.6+16.84...
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(1)4.8*100+4.8*0.1=480+0.48=480.48 (2)56.5*10+(56.5-5.65)=565+50.85=615.85
(3) 7.09*10=10.9 (4) 2.4*0.6+2.4*1.4=2.4*2=4.8 (5) 8.9+8.9*0.01=8.9+0.089=8.989
(6)18.76*10+(18.76-1.876)=187.6+16.844=204.484 (7)3.52/(2.5*0.4)=3.52/1=3.52
(8) (3.9+6.1)-(4.1+5.9)=10-10=0 (9) 15.02-1.02-6.8=14-6.8=7.2 (10)5.4*10=54
收起
:(1)4.8*100.1=4.8*100+4.8*0.1=480+0.48=480.48
(2)56.5*9.9+56.5=56.5*10-56.5*0.1+56.5=615.85
(3)7.09*10.8-0.8*7.09=7.09*(10.8-0.8)=7.09*10=70.9
(4)7.2*0.2+2.4*1.4=2.4*3*0.2+2.4*1.4*=2.4*(0...
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:(1)4.8*100.1=4.8*100+4.8*0.1=480+0.48=480.48
(2)56.5*9.9+56.5=56.5*10-56.5*0.1+56.5=615.85
(3)7.09*10.8-0.8*7.09=7.09*(10.8-0.8)=7.09*10=70.9
(4)7.2*0.2+2.4*1.4=2.4*3*0.2+2.4*1.4*=2.4*(0.6+1.4)=2.4*2=4.8
(5)8.9*1.01 =8.9*1+8.9*0.01=8.989
(6)18.76*9.9+18.76=18.76*(9.9+1)=18.76*11-18.76*0.1=204.484
(7)3.52÷2.5÷0.4 =3.52÷(2.5*0.4)=3.52
(8)3.9-4.1+6.1-5.9 =3.9+6.1-(4.1+5.9)=0
(9)15.02-6.8-1.02=15.02-1.02-6.8=14-6.8=7.2
(10)5.4*11-5.4=5.4*(11-1)=54
收起
(1)=4.8×(100+0.1)=480+0.48=480.48 (2)=56.5×(10-0.1)+56.5 =565+56.5-5.65
(3)=7.09×(10.8-0.8)=7.09 ×10=70.9 (4)=2.4×3×0.2+2.4×1.4=2.4×(0.6+1.4)=2.4×2
(5)=8.9×(1+0.01)=8.9+0.089 ( 6)=18.7...
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(1)=4.8×(100+0.1)=480+0.48=480.48 (2)=56.5×(10-0.1)+56.5 =565+56.5-5.65
(3)=7.09×(10.8-0.8)=7.09 ×10=70.9 (4)=2.4×3×0.2+2.4×1.4=2.4×(0.6+1.4)=2.4×2
(5)=8.9×(1+0.01)=8.9+0.089 ( 6)=18.76×(10-0.1)+18.76 =187.6+18.76-1.876
(7)=3.52 ÷2.5 ×2.5 =3.52 (8)=3.9+6.1-(4.1+5.9)=10-10=0
(9)=15.02-1.02-6.8 =14-6.8=7.2 (10)5.4×(10+1)-5.4=54+5.4-5.4=54
收起