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加减乘除的简便运算题

我给你出 追加 100分 184+98 695+202 864-199 738-301 380+476+120 (569+468)+(432+131) 256-147-53 373-129+29 189-(89+74) 456-(256-36) 28×4×25 125×32×25 9×72×125 720÷16÷5 630÷42 102×35 98×42 26×39+61×26 356...

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

1. =2/5+5/8+3/8 =2/5+(5/8+3/8) =2/5+1 =1又2/5 2. =7/8×12/13+7/8×1/13 =7/8×(12/13+1/13) =7/8×1 =7/8 3. =35×4/7×12/5 =4×12 =48 4. =2/15÷(1-8/15) =2/15÷7/15 =2/15×15/7 =2/7 5. =11/18÷(2-13/12) =11/18÷11/12 =11/18×12/11 =12/18 =2/3

31.50+160÷40 (58+370)÷(64-45) 32.120-144÷18+35 33.347+45×2-4160÷52 34(58+37)÷(64-9×5) 35.95÷(64-45) 36.178-145÷5×6+42 420+580-64×21÷28 37.812-700÷(9+31×11) (136+64)×(65-345÷23) 38.85+14×(14+208÷26) 23) 1.2×2....

123+25=148 123-35=88 56×7=392 135÷5=27 248+89=337 ... 146-23=123 ... 155×5=775 ... 456-12=38... 456+45=501 ... 546-457=89 ... 45×10=451 ... 564-12=47... 879+54=933 ... 896-546=350 ... 56×12=672.... 45-5=9... 457+456=913... 7+14...

8×0.4×12.5×2.5 125×(8+0.8+0.08) 3.35×6.4×2+6.7×3.6 18.7-3.375-6.625 25×1.25×32 1.28+9.8+7.72+10.2 12 ×1951 +12×2049 0.64×25×7.8+2.2 2÷2.5+2.5÷2 194-64.8÷1.8×0.9 36.72÷4.25×9.9 24÷2.4-2.5×0.8 1.25×17.6+36.1÷0.8+2.63×12....

600-60÷15 20X4÷20X4 736-35X20 25X4÷25X4 98-18X5+25 56X8÷56X8 280-80÷ 4 12X6÷12X6

你好: 1、口算 2.5+0.9 = 3.6+4.9 = 5.6 4.8 = 31.6= 3.06+ 4.4 = 8.8 +4.5= 5.2 + 4.8 = 32.9= 2、计算下面各题并且验算 3.64+1.48 22.32 +12.59 7.85 +1 1、口算 2.5 + 0.9 = 3.6 + 4.9 = 5.6 — 4.8 = 3—1.6= 3.06 + 4.4 = 8.8 + 4.5= 5.2...

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

计算下面各题,能简便的要简算. 49×102-2×49 125×78×8 8.33-2.43-4.57 99×37 6.7-2.63+3.3-3.37 41000÷(41×5) 3.5×72+6.5×28 5824÷8×(85-78) 840÷28+70×18

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