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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

874-169+31 14*(99+1) 700÷25÷4 2800÷100+789 <947-599>+76×64 <93+25×21>×9 36×<913-276÷3>

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+9999...

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= 25×4-1...

62×7.1+2.9, =440.2+2.9, =443.1; 4.2×0.25, =(4+0.2)×0.25, =4×0.25+0.2×0.25, =1+0.05, =1.05; 5.2×4.3+0.8×4.3, =(5.2+0.8)×4.3, =6×4.3, =25.8. 8.5+1.5÷0.25×4, =8.5+6×4, =8.5+24, =32.5. 0.25×0.8+2.5% =0.2+2.5%, =0.225; 32×1...

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/...

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/...

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以后自己写! 475+254+361 =470+250+360+(5+4+1) =470+250+360+10 =1090 615+475+125=615+(475+125)=1215 860-168+159=860-(168-159)=860-9=851 第四你应该抄错了,这没法简便 ,应该是-358 第五题直接按照顺序算 =476+65-(30-1)=476+65+1-...

408-12×24 = 408 - 288 = 120 (46+28)×60 = 74 x 60 = 4440 42×50-17 = 2100- 17 = 2083 32+105÷5 = 32 + 21 = 53 420×(327-238) = 420 x 89 = 37380 (4121+2389)÷7 = 6510 ÷7 = 930 3.416÷(0.016×35) = 3.416 ÷0.56 = 6.1 0.8×[(10...

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