五年级小数分数脱式15题

 再答： 再答： 再答： 再答： 再答： 再答： 再答： 再答： 

3.(23/4-3/4)×(3×6+2)4.3/7×49/9-4/35.8/9×15/36+1/276.12×5/6–2/9×37.8×5/4+1/48.6÷3/8–3/8÷69.4/7×5/9+3/

得数没有,自己算17×40＝100－63＝3.2＋1.68＝2.8×0.4＝14－7.4＝1.92÷0.04＝0.32×500＝0.65＋4.35＝10－5.4＝4÷20＝3.5×200＝1.5－0.

5.6×2.93.77×1.80.02×965.22×0.39.99×0.024.67×0.95×2.441.666×6.19.432×0.0025.6×6.54.88×2.95.61×4.38.9×

1.24.6x8-3.32.3.2x6-2.13.6.6-1.2x34.9.8+4x2.75.2.4x4.2-9.16.5.8x5-4x1.17.6.5x4+2.1x38.4.7x5+6.2-1.19

17×40＝680,100－63＝37,3.2＋1.68＝4.88,2.8×0.4＝1.1214－7.4＝6.6,1.92÷0.04＝48,0.32×500＝160,0.65＋4.35＝510－5.4

x+4=10x-12=348x=964x－30＝08.3x－2x＝63x÷10=5.23x+7x+10=903（x-12）+23=357x－8＝2x＋275x-18=3–2x（7x-4）+3（x-2）

5.6×2.93.77×1.80.02×965.22×0.39.99×0.024.67×0.95×2.441.666×6.19.432×0.0025.6×6.54.88×2.95.61×4.38.9×

简便运算；6.9＋4.8＋3.10.456＋6.22＋3.7815.89＋(6.75－5.89)4.02＋5.4＋0.985.17－1.8－3.213.75－(3.75＋6.48)分数混合运算；3/7

16.5÷2-6.5÷2=(16.5-6.5)÷2=10÷2=5这种结合律的题很多啊,是在不行就举一反三,换个数字

17×40＝680,100－63＝37,3.2＋1.68＝4.88,2.8×0.4＝1.1214－7.4＝6.6,1.92÷0.04＝48,0.32×500＝160,0.65＋4.35＝510－5.4

123+25=148123-35=8856×7=392135÷5=27248+89=337...146-23=123...155×5=775...456-12=38...456+45=501...54

利用除法来比较分数的大小今天阳光明媚,我正在家中看《小学数学奥林匹克》忽然发现这样一道题：比较1111/111,11111/1111两个分数的大小.顿时,我来了兴趣,拿起笔在演草纸上“刷刷”地画了起来

到数学书里面找吧

1.(1+1/2)(1+1/3)(1+1/4).(1+1/100)2.(1-1/2)(1-1/3)(1-1/4).(1-1/100)3.8+2-8+24.25*4/25*45.7.26-(5.26-1

23.5+14.8+36.5=23.5+36.5+14.8=60+14.8=74.819.4+30.6+45.62=50+45.62=95.6233.5+24.9+51.3=58.4+51.3=109

45.67+8.7=54.3760.23+34.1=94.3319.7-8.9=10.872.24+3.4-56.7=18.945.6x4=22.48.1/9=0.9等只要是小数的运算就可以的,但也要

1/6=1/30+1/30+1/30+1/30+1/30

小学数学辅导网上有,你去下就好了

408－12×24（46＋28）×6042×50－1715÷532＋105÷5（108＋47）×52420×（327－238）(4121+2389)÷7671×15-974469×12+1492405