(加减法接近整百数的简算)
380+476+120(569+468)+(432+131) (加法交换律和结合律的运用)
256-147-53373-129+29189-(89+74)456-(256-36) (减法的简算,重点:运算符号变化的处理) 28×4×25125×32×259×72×125 (乘法交换律和结合律的运用,重点:一个因数分成两个因数的处理) 720÷16÷5630÷42 (除法的简算) 102×3598×42 (乘法接近整百数的简算) 158+262+138375+219+381+2255001-247-1021-232 (181+2564)+2719378+44+114+242+222276+228+353+219 (375+1034)+(966+125)(2130+783+270)+101799+999+9999+99999 7755-(2187+755)2214+638+2863065-738-1065899+344 2357-183-317-3572365-1086-214497-2992370+1995 3999+4981883-39812×2575×24 138×25×4(13×125)×(3×8)(12+24+80)×50704×25 25×32×12532×(25+125)88×125102×7658×98
178×101-17884×36+64×8475×99+2×7583×102-83×2 98×199123×18-123×3+85×12350×(34×4)×325×(24+16) 178×99+17879×42+79+79×577300÷25÷48100÷4÷75 16800÷12030100÷210032000÷40049700÷700
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1248÷243150÷154800÷2521500÷125 158+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+344 2357-183-317-357 2365-1086-214 497-299 2370+1995 3999+498 1883-398 12×25 75×24 138×25×4
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(13×125)×(3×8) (12+24+80)×50 704×25 25×32×125 32×(25+125) 88×125 102×76 58×98 178×101-17884×36+64×8475×99+2×7583×102-83×298×199123×18-123×3+85×12350×(34×4)×325×(178×99+17879×42+79+79×57 7300÷25÷48100÷4÷7516800÷12030100÷2100 32000÷40049700÷7001248÷243150÷15 4800÷2521500÷1252356-(1356-721)1235-(1780-1665) 75×27+19×2531×870+13×3104×(25×65+25×28) (a+b)+c=a+(b+c) 2.73+0.89+1.274.37+0.28+1.63+5.72 a-b-c=a-(b+c) 10-0.432-2.5689.3-5.26-2.7413.4-(3.4+5.2) 14.9-(5.2+4.9)18.32-5.47-4.3217.29-5.28-6.29 (a×b)×c=a×(b×c)
25×6.8×0.040.25×32×0.1256.4×1.25×12.5 c×(a+b)=ca+cb
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24+16)
0.45×2010.58×10.150.2×994.7×9.9
3.28×5.7+6.72×5.72.1×99+2.11.7×9.9+0.17
23×0.1+2.3×9.90.18+4.26-0.18+4.26
0.58×1.3÷0.58×1.37.3÷4+2.7×0.253.75×0.5-2.75÷2 5.26×0.125+2.74÷8 a÷b÷c=a÷(b×c) 6.3÷1.89.5÷(1.9×8)12.8÷(0.4×1.6) 930÷0.6÷563.4÷2.5÷0.4(7.7+1.54)÷0.7 (11.7+9.9)÷0.9 简便计算(加减法) 6.9+4.8+3.115.89+(6.75-5.89)7.85+2.34-0.85+4.66 35.6-1.8-15.6-7.213.75-(3.75+6.48)47.8-7.45+2.55 66.86-8.66-1.34 乘除法: 0.25×16.2×40.25×32×0.1252.5×(4+0.4)(1.25-0.125)×8 4.8×100.14.2×9956.5×9.9+56.55.4×11-5.4 3.83×4.56+3.83×5.447.09×10.8-0.8×7.093.65×4.7-36.5×0.37 13.7×0.25-3.7÷410.7×16.1-1.1×10.7+10.7×54.9÷1.4 3.9÷(1.3×5)63.4÷2.5÷0.4(7.7+1.4)÷0.7
57.26-(5.26-1.5)106.25+3.85-2.125+3.875 11.9-2456×215/11-4×2.75
13.375+5.75+2.25+6.625(15.1-9036)÷18 163.8×5.25+14.5172.1×4.3+5.7×2.1 19.102×45-3282.8×3.1+16/8
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