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
答:
(1)28×(310-150)÷32=28×160÷32=4480÷32=140;(2)(269+151)÷(145-75)=420÷70=6;(3)150-20×5+25=150-100+25=50+25=75.
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答:
(1)72+12×4-25,=72+48-25,=120-25,=95;(2)300÷(15×14-200),=300÷(210-200),=300÷10,=30;(3)7×84÷(42-28),=7×84÷14,=588÷14,=42.
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答:
(1)1300÷25÷4 =1300÷(25×4) =1300÷100 =13(2)16×125 =2×(8×125) =2×1000 =2000
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答:
(1) 42×5÷15 =210÷15 =14(2) 6341-57×24 =6341-1368 =4973(3) 80×7÷56 =560÷56 =10(4) 390÷5÷6 =78÷6 =13
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答:
(1)102×46 =100×46+2×46 =4600+92 =4692(2)97×28+3×28 =28×(97+3) =28×100 =2800(3)25×42×4 =25×4×42 =100×42 =4200(4)32×125 =8×125×4 =1000×4 =4000
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答:
(1)125×48×8 =125×8×48 =1000×48 =48000(2)88×125 =8×125×11 =1000×11 =11000(3)39×63+39×37 =39×(63+37) =39×100 =3900(4)246+332+214+208 =(246+214)+(332+208) =460+540 =100
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答:
(1)(9800+980+98)÷98 =9800÷98+980÷98+98÷98 =111(2)999+2+9+99+2+9999 =999+1+(9+1)+(99+1)+(9999+1) =11110(3)4300÷50=86(4)125×50×16 =125×8×(50×2) =100000(5)94×[50×(1323÷
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答:
(1)99×0.625+0.625=(99+1)×0.625=100×0.625=62.5;(2)88×125=11×8×125=11×(8×125)=11×1000=11000;(3)72×125=9×8×125=9×(8×125)=9×1000=9000;(4)250×13×4=(250×
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答:
(1)893+(594+107)=(893+107)+594=1000+594=1594(2)105+298=(100+5)+(300-2)=(100+200)+(5-2)=400+3=403(3)5×(17×24)=(5×24)×17=120×17=(100+20)×17=100×17+20×17=1700+340=2040(4)125×16=(125×8)×2=1000&
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答:
(1)32.54-0.46-4.54=32.54-(0.46+4.54)=32.54-5=27.54;(2)7.6×99+7.6=7.6×(99+1)=7.6×100=760;(3)102×26-26=(102-1)×26=101×26=2626;(4)98×46=(100-2)×46=100×46-2×46=4600-92=4508.
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答:
8×3889×125,=8×125×3889,=1000×3889,=3889000;224×25-25×24,=25×(224-24),=25×200,=5000;76×298+76×3-76,=76×(298+3-1),=76×300,=22800;630×〔840÷(240-212)〕,=630×(840&d
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答:
328-165-35=328-(165+35)=128216+188+84=(216+84)+188=488306-197=306-200+3=10940×(140-115)=40×25=1000355÷(103-98)=355÷5=71246-38+62=246-40+64=270
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答:
(1)原式=8.24+3.5=11.74(2)原式=17.26-4.34 =12.92(3)原式=4.17+4.34 =8.51(4)原式=2.45+1.93 =4.38
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答:
(1)原式=3.52+(8.4+2.6) =3.52+11 =14.52(2)原式=42.24-(6.24+3.76) =42.24-10 =32.24(3)原式=(5.94+1.06)+(6.7+0.3) =7+7 =14(4)原式=(4.92-4.92)+(3.27+3.73) =0+7 =7
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答:
(1)原式=(0.9+0.1)+(1.08+0.92) =1+2 =3(2)原式=32.54-(10.46+4.54) =32.54-15 =17.54(3)原式=3.78+6.22+4.72 =10+4.72 =14.72(4)原式=18.73-2.73+3.85 =16+3.85 =19.85(5)原式=1.71+5.49 =7.2(6)原式= 45.6-4.9 = 40.7
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答:
(1)原式=700.2-115.2=585(2)原式=20-15.28= 4.72(3)原式=5.472-2.967 =2.505
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答:
(1)原式=8.961-4.205 = 4.756(2)原式=6.06-3.54 =2.52(3)原式=7.71+2.7 =10.41
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答:
(1)5.7+3.8+7.4 =9.5+7.4 =16.9(2)53.8+61.3-39.8 =115.1-39.8 =75.3(3)69-36.4+20.9 =32.6+20.9 =53.5(4)94.13-(28.9+21.4) =94.13-50.3 =43.53(5)72.2-(32.46-18.6) =72.2-13.86 =58.34(6)14.38+45.6-30.69 =59.98-30.69 =29.29
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答:
(1)原式=58+3.07=61.07(2)原式=84.43-(5.06+19.94) =59.43(3)原式=73.45+25.55-23.46 =99-23.46 =75.54(4)原式=28.26-(9.7-5.26) =28.26-4.44 =23.82(5)原式=8.7+5.27 =13.97(6)原式=13.7+4.3+(0.98+0.02) =19
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答:
(1)534+26+166+74 =534+166+(26+74) =800(2)72×28+72×172 =72×(28+172) =14400(3)[275-(32+46)]×28 =(275-78)×28 =5516(4)60×(600-400÷25) =60×584 =35040(5)(235-63-37)×6 =(235-100)×6 =810(6)301
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