Question

300题四年级下册脱式计算,急!急!急!(带答案)

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Answer 1

1.45+15×6= 135 2.250÷5×8=400 3.6×5÷2×4=60 4.30×3+8=98 5.400÷4+20×5= 200 6.10+12÷3+20=34 7.(80÷20+80)÷4=21 8.70+(100-10×5)=120 9.360÷40+10= 19 10.40×20-200= 600 11.（80-25）*2= 110 12.70+45=115 13.90×2÷3= 60 14.16×6÷3= 32 15.300×6÷9= 200 16.540÷9×7=420 17.30×20÷15= 20 18.400÷4×7= 700 19.（350-80）÷9= 30 20.160+70+50=280 21.18-64÷8= 10 22.42÷6+20=27 23.40-5×7= 5 24.80+60÷3=100 25.41+18÷2= 50 26.75-11×5= 20 27.42+7-29= 20 28.5600÷80=70 29.25×16÷4= 100 30.120×25÷5= 600 31.36×11÷3= 132 32.1025÷25×8=328 33.336+70-6= 400 34.25×9×4= 900 35.200-33×3= 101 36.3020-1010=2010 37.12×50+10= 610 38.25×8+199= 399 39.23×11-13= 240 40.125÷25-5=0 41.4200-2200+200=2200 42.220+80-150=150 43.20×8×5= 800 44.600-3×200=0 45.20+20÷2= 30 46.35-25÷5= 30 47.36+8-40= 4 1）25%*132+1/4*8 2)32*0.125*25 =1/4*132+1/4*8 =(4+8)*0.125*25 =1/4*(132+8) =(4*25)*(8*0.125) =1/4*140 =100*1 =35 =1000 3)75%*76+25*4+0.75*12 =3/4*76+3/4*12+25*4 =3/4*88+100 =166 4)3200*1/8÷2/5+1270 5)(2/3+4/5)*7/6 =400*5/2+1270 =22/15*7/6 =1000+1270 =77/45 =2270 5)6*(1/2+2/3) 6)132*(44÷176) =6*1/2+6*2/3 =132*1/4 =33 =3+4 =7 7)72.25%*99+75.25% =75.25%*99+75.25%*1 =75.25%*(99+1) =75.25%*100 =75.25 ①2700×（506－499）÷900 ②33.02－（148.4－90.85）÷2.5 =2700×7÷900 =33.02－57.55÷2.5 =18900÷900 =33.02－23.02 =21 =10 ③（1÷1－1）÷5.1 ④18.1＋（3－0.299÷0.23）×1 =（1－1）÷5.1 =18.1＋1.7X1 =0÷5.1 =18.1＋1.7 =0 =19.8

追问

清楚吗？(:=__=:)----
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