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二十道没有没有答案的脱式计算(2年级)

(1) 35-18+77 (2) 42-16+66 (3) 73-24+18 (4) 23+29-45 (5) 66-47+25 (6) 63-28+46 (7) 93-24+43 (8) 30-17+49 (9) 73-46+28 (10) 87-59+36

54-(13+16) =54-29 =25 42-(23+17) =42-40 =2

24+8-63*6÷947-12+547-10+534-16/815-6*252-36+1968+3*453-3*963/7-581-45/549/7*674-28+154*(75-70)(52-37)/516-8*215-6*224/(4*2)难点的托市计算:265+97-348658-(184+307)(291-246)/99*(3007-2998)167+5*9593-(271+169)400-256...

28-12+38

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...

我的老师给我的作业一个星期都没这么多

1、 1.25×(8+10)=1.25×8+1.25×10=10+12.5=22.5 2、1.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.78 3、1/2-(4/5-1/2)=1/2+1/2-4/5=1-4/5=1/5 4、4800÷25÷4=4800÷(25x4)=4800÷100=4800÷100=48 5、2/5-(3/8-3/5)=2/5+3/5-3/8=1-3/8=5/8 6、3/4-(3/...

回答: 计算下面各题: 78-50-9= 72-2-30= 35+6+40= 47+9-20= 17+3+15= 75-50+14= 49-9-30= 28+20+2= 99-20+6= 100-30-7= 16+15-7= 70-30+33= 85-6-19= 6+24+30= 75-20-30= 62-5+7= 64-6-40...

25+65+98 =90+98 =188 100-100÷25=100-4=96 250÷50+12×4=5+48=53

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...

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