脱式计算问题大全及答案

更新时间:2021-06-23
类型:小学四年级数学题
题数:100
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  • 答: (1)原式=15.3+4.7+(0.86+0.14) =20+1 =21(2)原式 =365×(100-1) =36500-365 =36135(3)原式=125×8×8 =8000(4)原式=0.25×4×11 =11(5)原式=19.6÷(2×5) =1.96(6)原式=4×2.5×2.73 =27.3(7)原式=13.5+15-10+0.25 =13.5+5+0.25 =18.75(8)原式 查看答案
  • 答: (1)(78+52)×(120÷60)=130×2=260(2)(128-72)×12÷48 =56×12÷48 =672÷48 =14(3)80-(16.405+14.9) =80-31.305 = 48.695(4)68.7-(44.6+0.375) =68.7- 49.975 =23.725(5)150×40×25×2 =300×1000 =3000 查看答案
  • 答: (1)原式=75.8-(2.25+7.75) =65.8(2)原式=37.12-13.96 =23.16(3)原式=8×1.25+0.8×1.25 =10+1 =11(4)原式=0.4×7×1.4+0.4×9×1.2 =0.4×(9.8+10.8) =8.24 查看答案
  • 答: (1)原式= 4+0.09 = 4.09(2)原式=(3.4-0.36)÷2.5 =1.216(3)原式= 48÷3.2 =15(4)原式=18÷(0.6×1.5) =20 查看答案
  • 答: (1)原式=(100×0.1-0.1)÷30 =9.9÷30 =0.33(2)原式=4.3-(0.6+3) =4.3-3.6 =0.7(3)原式=0.18×(4×0.5) =0.18×2 =0.36(4)原式=7.5×(0.12+0.88) =7.5×1 =7.5 查看答案
  • 答: (1)原式= 4.23×9.9+4.23×0.1 = 4.23×(9.9+0.1) = 42.3 (2)原式=9.87÷0.987÷7.2 =10÷7.2 = 查看答案
  • 答: (1)原式=3.4+11.4 =14.8(2)原式=10.6-2.96 =7.64(3)原式=120×6.2=744(4)原式=9.3÷0.03 =310(5)原式=13.2÷2.2×0.9 =5.4(6)原式=12×3.9 = 46.8 查看答案
  • 答: (1)8.6+3.65+1.4+6.3  =10+10  =220(2)0.46×8.2-0.46×7.2  =0.46×(8.2-7.2)  =0.46(3)19.2÷(22-21.7)  =19.2÷0.3  =64 查看答案
  • 答: (1)4.89-2.69+15.4  =2.2+15.4  =17.6(2)2.96÷0.4-1.73  =7.4-1.73  =5.67(3)(4.67+4.93)÷0.8  =9.6÷0.8  =12(4)(12-9.9)×3.2  =2.1×3.2  =6.72 查看答案
  • 答: (1)1.6×(27.75÷1.5)  =1.6×18.5  =29.6(2)13.8÷(10-7.6)  =13.8÷2.4  =5.75(3)3.2×(4.7+7.8)  =3.2×12.5  =40(4)(3.2+0.12)÷0.8  =3.32÷0.8  =4.15 查看答案
  • 答: (1)原式=2.85+5.7 =8.55(2)原式=10.8×0.9 =9.72 查看答案
  • 答: (1)50-4.96-26.38=50-(4.96+26.38)=50-31.34=18.66(2)8.2+0.87-3.5=9.07-3.5=5.57(3)25.6-2.8-14.6-8.2=(25.6-14.6)-(2.8+8.2)=11-11=0(4)13.94-5.2-4.8=13.94-(5.2+4.8)=13.94-10=3.94(5)4.36+1.73+0.64+0.27=(4.36+0.64)+(1.73+0.27)=5+2=7(6)76.58+(6.75-6.48)=76.58+0.27 查看答案
  • 答: (1)70.8-1.25-1.75,=70.8-(1.25+1.75),=70.8-3,=67.8;(2)5.81+8.3+4.19+11.7,=(5.81+4.19)+(8.3+11.7),=10+20,=30;(3)8.7×9.9,=8.7×(10-0.1),=8.7×10-8.7×0.1,=87-0.87,=86.13;(4)0.25×17.3×0.4,=0.25×0.4×17.3,=0.1× 查看答案
  • 答: (1)46.5×99+46.5=46.5×(99+1)=46.5×100=4650(2)12.5÷2.5÷0.4=12.5÷(2.5×0.4)=12.5÷1=12.5(3)2.6×1.9÷2.6×1.9=2.6÷2.6×1.9×1.9=1×1.9×1.9=3.61(4)(7.7+1.54)÷ 查看答案
  • 答: (1)原式=0.3×0.23 =0.069(2)原式=0.58×(1.54+2.46+1) =2.9(3)原式=2.5×4×(0.8×12.5) =10×10 =100(4)原式=22.04÷4×0.2 =5.51×0.2=1.102 查看答案
  • 答: (1)原式=3.8+6.2+(5.46+4.54)=10+10 =20(2)原式=25.75×4.2 =108.15(3)原式=(10+0.1)×13 =130+1.3 =131.3(4)原式=0.28×(12.5-2.5) =0.28×10 =2.8 查看答案
  • 答: (1)100-36.6-63.4=100-(36.6+63.4)=100-100=0(2)0.25×13.7×0.4=0.25×0.4×13.7=0.1×13.7=1.37(3)32.7×28+7.3×28=(32.7+7.3)×28=40×28=1120(4)1.83+85+98.17+15=(1.83+98.17)+(85+15)=100+100=200(5)0.98×105=0.9 查看答案
  • 答: (1)原式=43.56+56.44+(12.5+7.5) =120(2)原式=620×7÷14 =310(3)原式=8×125×(25×4) =100000(4)原式=116.4-16.4-11 =89 查看答案
  • 答: (1)原式=65.8-15.8+6.9 =50+6.9 =56.9(2)原式=72×(100+2) =7200+144 =7344(3)原式=10.97-8.96 =2.01(4)原式=300÷10+48 =78(5)原式=15.7+4.3-(10.17+5.83)=20-16 = 4(6)原式=9÷3 =3 查看答案
  • 答: (1)70.8-7.25-1.75  =70.8-9  =61.8(2)5.81+8.3+4.19+11.7  =10+20  =30(3)0.05×0.4×20×1.7  =1×0.4×1.7  =0.68(4)4.87×2.34+4.87×7.66  =4.87×10  =48.7 查看答案
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