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320 4 2列成脱式计算

200÷20*30 = = 85+14*20 = = 95÷(65-56) = = 120+36*4 = = 32*97 = = 85*91÷7 = = 67*(2*3) = = 43+943÷6 = = 91*3+149 = = 93*6+124 = = 324÷7+635 = = 44*30÷3 = = 221+22*4 = = 481*6*0 = = 384*6*7 = = 40÷2*174 = = 147+72÷8 = = 9*(9.

解:350÷4=(320+28+2)÷4=320÷4+28÷4+2÷4=80+7+0.5=87.5

22*4+221 21*3+410 40÷2+174147+72÷8 9*4+420 2*80÷4120*5÷2 202+36÷9 30÷5 80*30+5600 9450-3200-42002400÷6-45 800* 7-180 1600÷2+230 4000 ÷ 8 + 350 320

320÷4÷(32÷4)=80÷8=10

一、 口算题( 12分 )4.4÷11= 0.3*0.3= 0÷730= 0.03*10-0.1=7÷5= 0.25÷0.5= 0.53*7= 125*0.5*0.8=1.9*0.5= 29*5= 2.3*0.8= 0.2*7.6*50= 二、 简算题( 6分 )9.9*8.6+0.86 三、 计算题(每道小题 6分 共 12分 )1.3-7.14÷3.5*1.052.[20-(90.75÷

一、请你口算.0.38+0.6= 155-(60-55)= 64.2+5.7= 643-27-73=0.97-0.09= 12.8-9.86= 17.08-4.58 = 9900÷25÷4=3.5+0.6= 5-0.15= 4.35+5.35= 99*55+55= 0.81+0.09= 0÷78= 60-20÷5= 47*25*4= 0.5+0.5= 0.5-0.5= 0.5*0.5= 0.5÷1= 二、请用递等式

1. 3/7 * 49/9 - 4/3 2. 8/9 * 15/36 + 1/27 3. 12* 5/6 2/9 *3 4. 8* 5/4 + 1/4 5. 6÷ 3/8 3/8 ÷6 6. 4/7 * 5/9 + 3/7 * 5/9 7. 5/2 -( 3/2 + 4/5 ) 8. 7/8 + ( 1/8 + 1/9 ) 9. 9 * 5/6 + 5/6 10. 3/4 * 8/9 - 1/3 11. 7 * 5/49 + 3/14 12. 6 *( 1/2 + 2/3 ) 13. 8 * 4/5 + 8 * 11/5

四年级脱式计算是几步的啊,是几位数乘几位数的啊?列竖式计算呢?

1.1999除以3998又5998分之5997=1999*5998÷(3998*5998+5997)=5998÷(2*5998+3)=5998/11999.2.6又5分之3乘3572+642.7乘66+1除以33分之五=6.6*3572+6427*6.6+6.6=6.6*(3572+6427+1)=6.6*10000=66000.

8.43.27 2.73=() 列脱式计算8.43.27 2.73=5.13+2.73=7.86 直接计算

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