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脱式计算100道有答案

1. 4×102-2×49 =408-2×49 =408-98 =310 2. 25×(2+4) =25×2+25×4 =50+100 =150 3. 12×5+8 =60+8 =68 4. 99×101 =99×(100+1) =99×100+99×1 =9900+99 =9999 5. 25×(78×4) =25×4×78 =100×78 =7800 6. (25+12)×4 =25×4+12×4 =100+48 =148 7. ...

就一道题你都一脸懵逼

0.35×1.6+0.35×3.4 0.25×8.6×4 6.72-3.28-1.72 0.45+6.37+4.55 5.4+6.9×3-(25-2.5)2×41846-620-380 4.8×46+4.8×54 0.8+0.8×2.5 1.25×3.6×8×2.5-12.5×2.4 28×12.5-12.5×20 23.65-(3.07+3.65)

1.95.6*18+0.4*18 =(95.6+0.4)*18 =96*18 =1728 2.907*99+907 =907*(99+1) =907*100 =90700 3.0.6*143-0.6*43 =0.6*(143-43) =0.6*100 =60 4.6.5*8+3.5*8-47 =(6.5+3.5)*8-47 =80-47 =33 5.14*2.25+14*3.75 =(2.25+3.75)*14 =6*14 =84 6.3.5*0.8...

12+5268.32-2569 123+456-52*8 789+456-78 181+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 138×25×4 (13×125)×(3×8) (12+24+...

1. 0.4×125×25×0.8 =(0.4×25)×(125×0.8)=10×100=1000 2. 1.25×(8+10)=1.25×8+1.25×10 =10+12.5=22.5 3.9123-(123+8.8)=9123-123-8.8=9000-8.8=8991.2 4.1.24×8.3+8.3×1.76 =8.3×(1.24+1.76) =8.3×3=24.9 5.9999×1001=9999×(1000+1)=...

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 ...

40+30÷3 =40+10 =50

1.125*3+125*5+25*3+25 2.9999*3+101*11*(101-92) 3.(23/4-3/4)*(3*6+2) 4.3/7 × 49/9 - 4/3 5.8/9 × 15/36 + 1/27 6.12× 5/6 – 2/9 ×3 7.8× 5/4 + 1/4 8.6÷ 3/8 – 3/8 ÷6 9.4/7 × 5/9 + 3/7 × 5/9 10.5/2 -( 3/2 + 4/5 ) 11.7/8 + ( 1/8 + 1...

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