口算100题时间：10分钟分数：0.37 +0.53 =7+1.4 =2.4 5 =3 , 4_1 十 77504 399 =0.22 =303 =15X5+15X5 =0.63 q.7 =0.89 +0.1 =302 197 =7.8 1.6 =11=450.83 =5.4 + 6 =2-3 =55X7 =21_ 312X-=47一 X1 =8170 X=254 X50% =34,-25% =5c C,325%+ 一=450% 50% =5 2 6 32+70% =3 1-X8 411一刈+- X8 =881_ 1 _- -368 3X=15 41 80% =8 J . -9 51.5 X60% =131+ X-=443.1310 -=443 13 1一 X- +_ X-=4 2 4 24M0 =558X16 1573X12 1490X=908X75% =64？3 =7c,120% + -=665% -15% =416+=91c37.5% =2530%30% =36 X25% =1 Y一 =3 =318 +1% =77 -=910 5: 一7 2118X25% =150X1.2% =1 37% -13% =5-？8 =3.5 礼.25 =0.3 0.15 =100-0.91 =4X1.5+ 3 =2 4X=4 51 3=-=5 54.8 X99 =3.14 X8 =6.28 与.14 =1-1 =7 16X 一16 4 -5 4-一3416 715 718 91 1 -=4 4315 十一=5714: =20 1514X5 =7+ 12.5%125受 16 u一88%:57 H72500X0.4924 X5 =1 0.625 + 85.4 占。9 U5 2U17X - 25%X=3.65 X -1=0.756450 125%X=37.5 X + 1 X= 215651 .完成一批零件，已完成的个数与零件总个数的比是1:3,。如果再加工15个，完成个数与剩下的个数就同样多，这批零件共有多少个？2 .五年级共有550人，若抽掉男生的 1和60名女生去排练大合唱，剩下的男生与剩下的4女生人数相等。五年级共有女生多少人？3 .甲乙在银行存款共 9600元，如果两人分别取出自己存款的40%,再从甲存款中提 120元给乙.这时两人钱相等，求乙的存款。