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50道简算脱式计算

1.3/7 * 49/9 - 4/32.8/9 * 15/36 + 1/273.12* 5/6 2/9 *34.8* 5/4 + 1/45.6÷ 3/8 3/8 ÷66.4/7 * 5/9 + 3/7 * 5/97.5/2 -( 3/2 + 4/5 )8.7/8 + ( 1/8 + 1/9 )9.9 * 5/6 + 5/610.3/4 * 8/9 - 1/311.7 * 5/49 + 3/1412.6 *( 1/2 + 2/3 )13.8 * 4/5 + 8 * 11/514.31 * 5/6 5/

方程:(0.5+x)+x=9.8÷2 2(x+x+0.5)=9.8 25000+x=6x 3200=450+5x+x x-0.8x=6 12x-8x=4.8 7.5*2x=15 1.2x=81.6 x+5.6=9.4 52-x =15 91÷x =1.3 x+8.3=10.7 15x =3 3x-8=16 7(x-2)=2x+3 3x+9=2718(x-2)=270 12x=300-4x 7x+5.3=7.4 3x÷5=4.8 30÷x+

125*8/10=?(7+1)*25-(125-25)/4=?

① 125x3+125x5 ② 25x3+25 ③ 101x11x(101-92) ④ 4.8+8.63+5.2+0.37 ⑤ 5.93+0.19+2.81 ⑥ 1.76+0.195+3.24 ⑦ 2.35+1.713+0.287+7.65 ⑧ 1.57+0.245+7.43 ⑨ 6.02+3.6+1.98 ⑩ 0.134+2.66+0.866 11 1.27+3.9+0.73+16.1 12 7.5+4.9-6.5 13 3.

6.9+4.8+3.1 0.456+6.22+3.78 15.89+(6.75-5.89)4.02+5.4+0.98 5.17-1.8-3.2 13.75-(3.75+6.48)3.68+7.56-2.68 7.85+2.34-0.85+4.66 35.6-1.8-15.6-7.23.82+2.9+0.18+9.1 9.6+4.8-3.6 7.14-0.53-2.475.27+2.86-0.66+1.63 13.35-4.68+2.65 73.8-1.64-

脱式计算. 408-12*24 (46+28)*60 42*50-1715÷5 32+105÷5 (108+47)*52 420*(327-238) (4121+2389)÷7 671*15-974 469*12+1492 405*(3213-3189) 5000-56*23 125*(97-81) 6942+480÷3 304*32-154 20+80÷4-20= 100÷(32-30)*0= 25*4-12*5

158+262+138 375+219+381+225 5001-247-1021-232 (181+2564)+2719 378+44+114+242+222 276+228+353+219 (375+1034)+(966+125) (2130+783+270)+1017 99+999+9999+99999 7755-(2187+755) 2214+638+286 3065-738-1065 899+

4.8+0.2+4.5 6.6+4.2+2.8 36+99 2.6+13.4+2.6

50道脱式计算 30.8÷[14-(9.85+1.07)] [60-(9.5+28.9)]÷0.18 2.881÷0.43-0.24*3.5 20*[(2.44-1.8)÷0.4+0.15] 28-(3.4+1.25*2.4) 2.55*7.1+2.45*7.1 777*9+1111*3 0.8*[15.5-(3.21+5.79)] (31.8+3.2*4) ÷ 5 31.5*4÷(6+3) 0.64*25*7.8+2.2 2÷2.5+2.5÷2脱式

0.4*125*25*0.8 =(0.4*25)*(125*0.8)=10*100=1000 1.25*(8+10) =1.25*8+1.25*10=10+12.5=22.5 9123-(123+8.8) =9123-123-8.8=9000-8.8=8991.2 1.24*8.3+8.3*1.76 =8.3*(1.24+1.76)=8.3*3=24.9 9999*1001 =9999*(1000+1)=9999*1000+

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