2023年四年级数学上册教材练习五上课课件新人教版

R,四年级上册,练习五,教材,P31,练习五,T1,1.,填空。,(1)631020500,是,(),位数，它的最高位是,(),位。,3,在,(),位上，十万位上是,(),。,(2)5,个千万、,7,个十万和,8,个千是,(),。,(3)38204000000,里有,(),个亿和,(),个万。,(4)930701000=900000000+30000000+()+(),九,亿,千万,0,50708000,382,400,700000,1000,教材,P31,练习五,T2,2.,写出下面各数，再省略万位或亿位后面的尾数，求出它们的近似数。,四百万五千九百,三亿八千四百零八万,一千零三亿三千九百万,写作：,4005900,写作：,384080000,写作：,100339000000,401,万,4,亿,1003,亿,教材,P31,练习五,T3,3.,按规律写出下面右边各算式的得数，,并用计算器验算一下。,9992=1998,9993=2997,9994=3996,9995=4995,9996=_,9997=_,9998=_,9999=_,9,2,1,8,9,3,2,7,9,4,3,6,9,5,4,5,9,6,5,4,99,6993,7992,8991,教材,P31,练习五,T4,4.,两个同学一组，准备两套,0 9,的数字卡片。两人轮流摸卡片，每次摸一张，把摸到的数字写在自己选定的那组空格的某一格里。谁写的数大，谁就获胜。,教材,P32,练习五,T5,5.,比较下面每组中两个数的大小。,260800 27,万,500000000 5,亿,4000000,40,万,297860000,3,亿,270000,500000000,400000,300000000,教材,P32,练习五,T6,6.,在里填上合适的数。,9,8765000,9,亿,3562100000,103270000,69,000,70,万,2,00800000,2810800000,04,49,59,9,教材,P32,练习五,T7,7.,先想想下面的题哪些适合用笔算，哪些适合用计算器，再计算。,2222222229=_,999-899+900+333+222=_,1+2+3+4+5+95+96+97+98+99=_,2724+321-165+456=_,24691358,100,555,1555,500,1260,81,882,8883,教材,P32,练习五,T8,8.,用计算器计算每组前三题，再根据规律写出其他算式的得数。,99=,_,989=,_,9879=,_,98769=_,987659=_,9876549=_,18+1=,_,128+2=,_,1238+3=,_,12348+4=_,123458+5=_,1234568+6=_,8,88,888,1,2,3,88884,888885,8888886,9876,98765,987654,9,98,987,