小学三年级四则混合运算及答案 408－12×24=408-288=120 （46＋28）×60=74x60=4440 42×50－17=2100-17=2083 32＋105÷5=32+21=53 420×（327－238）=420x89=37380 (4121+2389)÷7=6510÷7=930 3.416÷（0.016×35）=3.416÷0.56=6.1 0.8×[(10－6.76)÷1.2]=0.8x(3.24÷×0.2-0.62=1.134-0.62=0.514 0.4×0.7×÷[14－(9.85＋1.07)]=30.8÷(14-10.92)=30.8÷3.08=10 [60－(9.5＋28.9)]÷0.18=(60-38.4)÷0.18=21.6÷0.18=120 2.881÷0.43－0.24××[(2.44－1.8)÷0.4＋0.15]=20x(0.64÷0.4+0.15)=20x(1.6+0.15)=20x1.75=35 28-(3.4+1.25×2.4)=28-(3.4+3)=28-6.4=21.6 2.55×7.1+2.45×7.1=(2.55+2.45)x7.1=5x7.1=35.5 0.8××4）÷5=(31.8+12.8)÷5=44.6÷5=8.92 31.5×4÷(6+3)=126÷9=14 2÷2.5+2.5÷2=0.8+1.25=2.05 194－64.8÷1.8×0.9=194-36x0.9=194-32.4=161.65180－705×6=5180-4230=950 24÷2.4－2.5×0.8=10-2=8 405×(3213-3189)=405x24=9720 125×(97-81)=125x16=2000 6942+480÷3=6942+160=6782 20+80÷4-20=20+20-20=40-20=20 100÷（32-30）×0=100÷2x0=50x0=0 25×4-12×5=100-60=40 70×〔（42-42）÷18〕=70x(0÷18)=70x0=0 75×65+75×35=75x(65+35)=75x100=7500 6-1.6÷4=6-0.4=5.6 5.38+7.85-5.37=13.23-5.37=7.86 7.2÷0.8-1.2×5=9-6=3 6-1.19×3-0.43=6-3.57-0.43=6-(3.57+0.43)=6-4=2 6.5×（4.8-1.2×4）=6.5x(4.8-4.8)=6.5x0=0 0.68×1.9+0.32×1.9=(0.68+0.32)x1.9=1x1.9=1.9 10.15-10.75×0.4-5.7=10.15-4.3-5.7=10.15-(4.3+5.7)=10.15-10=0.15 5.8×（3.87-0.13）+4.2×÷3.2）××（65-345÷23）=200x(65-15)=200x50=10000 本文来源：https://www.wddqw.com/doc/9a7b0773b968a98271fe910ef12d2af90342a850.html