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四年级脱式100道带答案

1、56+31+24=(56+24)+31=80+31=1112、615+475+125=615+(475+125)=615+600=12153、125*64=125*8*8=1000*8=80004、 89+101+111=101+(89+111)=101+200=3015、24+127+476+573=(24+476)+(127+573)=500+700=12006、400-

25*125*40*8 =(125*8)*(25*40)=1000*1000=1000000 125*18-10=125*8=1000

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=

(1) 94 * 8 = (2) 57 * 6 = (3) 9 * 67 =(4) 26 * 9 = (5) 41 * 9 = (6) 57 * 3 =(7) 7 * 79 = (8) (20) 68 * 2 =四年级几百几十数乘一位数(1) 4 * 30 = (2) 100 * 4 = (3) 700 * 5 =(4)

4600解析:99*46+46=99*46+1*46=(99+1)*46=100*46=4600

45+240÷12 124+78+22 100-35-25 (140-70)*54 63+84*2÷42 490÷7+24*526*6-110 345+99 (46-20)*30-9025*27*4 15*7+85*7 (40-4)*25125*64 2400÷80-14*2 108-(83+360÷60) (420+48)÷(375-345) 290-(34*3+99) 142-54÷9+14 240÷16 75*4*

36.72÷4.25*9.9 4.07*0.86+9.125.67*0.2-0.62 18.1*0.92+3.93 0.043*24+0.875 0.4*0.7*0.25 0.78+5.436+136.72÷4.25*9.93.416÷(0.016*35)0.8*[(10-6.76)÷1.2] (6.8-6.8*0.55)÷8.5 0.12* 4.8÷0.12*4.89.72*1.6-18.305÷7 3.2*(1.5+2.5)÷1.6 3.2*6+(1.

1) 311*8-8-8*112= 2) 98*100+197*98= 3) 6*3+6+194*6= 4) 12*15+12+182*12= 5) 304*10-10-10*105= 6) 17*180+17+17*17= 7) 85*82+17*85= 8) 336*20-20-20*137= 9) 398*32-32-32*1= 10) 390*166+131*390= 11) 4*40+4+157*4= 12) 560

(1) 94 * 8 = (2) 57 * 6 = (3) 9 * 67 =

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