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四年级下册口算题50道

15*3= 15*30= 150*3= 150*30= 15*300= 3*150=25*4= 45*20= 50*40= 250*4= 125*4= 125*8=21*4= 21*40= 210*4= 60*90= 600*8= 60*50=43*2= 20*34= 3*230= 12*40= 70*20= 3*900=60*90= 12*7= 12*70= 120*70= 800*90= 40*200=35*

小数乘除法口算练习1.5*e799bee5baa6e59b9ee7ad94313333613030344= 2.5*4= 0.13* 4= 5.4÷10=0.18*0.3=4.2*1000= 0.45÷0.15= 3.6÷0.1= 8.5*100=8.5÷ 1.7=3.2÷100= 1.2÷0.3 =0.49÷7= 0 .04*25=0.096÷0.03=84÷4.2= 1000*0.756=0.5*100=

32*30= 22*30= 6*201=17*5= 4*60= 4500÷900=170+90= 4800÷40= 14*201=80÷16= 4200÷20= 2500÷50=16*5= 32*20= 67*4=2400÷40= 3600÷60= 87÷3=25*16= 48*9= 696÷3=125*6= 48*25= 780÷20=72-45= 360-85= 720÷45÷2=3000+200=

640÷80= 15*5= 23*3= 12*2*5= 480÷80= 16*5= 27*3= 90÷15= 48÷4= 640÷16= 39÷3= 24*20= 32*3= 48÷16= 12*8= 27*3= 56÷14= 24÷8= 14*2= 83-45= 560÷80= 96÷24= 40÷20= 40*30= 37+26= 76-39= 605+59= 30*23= 12*8= 27+32= 48+27=

54.76 - 51.12 = (2) 61.45 + 20.7 = (3) 59.46 + 18.28 = (4) 46.31 + 21.76 = (5) 21.85 + 37.08 = (6) 42.88 - 12.63 = (7) 84.75 + 13.96 = (8) 42.39 - 20.92 = (9) 29.54 - 20.12 = (10) 76.13 + 13.37 = (11) 26.31 - 22.07 = (12) 93.99 - 36.18 = (13) 69.

四年级两位数乘一位数(1) 94 * 8 = (2) 57 * 6 = (3) 9 * 67 = (4) 26 * 9 = (5) 41 * 9 = (6) 57 * 3 = (7) 7 * 79 = (8) 62 * 5 = (9) 21 * 1 = (10) 3 * 57 = (11) 5 * 84 = (12) 8 * 26 = (13) 5 * 67 = (14) 37 * 4 = (15) 8 * 98 = (16) 6 * 24 = (17) 98 * 5 = (18) 12

640÷80= 15*e799bee5baa6e79fa5e98193e59b9ee7ad94313333396563635= 23*3= 12*2*5= 480÷80= 16*5= 27*3= 90÷15= 48÷4= 640÷16= 39÷3= 24*20= 32*3= 48÷16= 12*8= 27*3= 56÷14= 24÷8= 14*2= 83-45= 560÷80= 96÷24= 40÷20= 40

560÷35÷2= 25*4= 254+99= 45*12= 750-570= 50÷7= 57+19= 60÷60= 70*60= 91-28= 58+79+42= 80*5*6= 90-25= 35*35+65*35= 125*80= 44-15= 1800÷90= 125*16= 97+18= 10*24= 45*14= 26+14= 81÷27= 69÷23= 123+259+741+477= 95*46

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