怎么简便就怎么算: 794-198 68×99 6756-193-207 72×125 0.9+1.08+0.92+0.1 1
作者&投稿:兆昆河 (若有异议请与网页底部的电邮联系)
(1)794-198,=794-200+2,=594+2,=596;(2)68×25,=17×4×25,=17×(4×25),=17×100,=1700;(3)6756-193-207,=6756-(193+207),=6756-400,=6356;(4)72×125,=9×8×125,=9×(8×125),=9×1000,=9000;(5)97×360+3×360,=360×(97+3),=360×100,=36000.
(1)794-198, =794-(200-2), =794-200+2, =594+2, =596; (2)68×99, =68×(100-1), =68×100-68, =6800-68, =6732; (3)6756-193-207, =6756-(193+207), =6756-400, =6356; (4)72×125, =9×8×125, =9×(8×125), =9×1000, =9000; (5)0.9+1.08+0.92+0.1, =(0.9+0.1)+(1.08+0.92), =1+2, =3; (6)13.59-6.91-0.09, =13.59-(6.91+0.09), =13.59-7, =6.59. |
逮荆金喜: 把198变成200-2,就可以了 794-198 =794-(200-2) =79-200+2=594+2=596
迁西县13089958469: 794 - 198的简便运算794 - 198=794 - 200+2=594+2=596 为什么后面加2 - ?
逮荆金喜:[答案] 794-200+2=596
迁西县13089958469: 794 - 198的简便运算 - ?
逮荆金喜: 794-200+2=596
迁西县13089958469: 怎么简便就怎么算: 794 - 198 68*99 6756 - 193 - 207 72*125 0.9+1.08+0.92+0.11 - ?
逮荆金喜: (1)794-198,=794-(200-2),=794-200+2,=594+2,=596;(2)68*99,=68*(100-1),=68*100-68,=6800-68,=6732;(3)6756-193-207,=6756-(193+207),=6756-400,=6356;(4)72*125,=9*8*125,=9*(8*125),=9*1000,=9000;(5)0.9+1.08+0.92+0.1,=(0.9+0.1)+(1.08+0.92),=1+2,=3;(6)13.59-6.91-0.09,=13.59-(6.91+0.09),=13.59-7,=6.59.
迁西县13089958469: 794 - 198怎样简算 - ?
逮荆金喜: 794-198=794-200 +2 = 594+2=596
迁西县13089958469: 794 - 198算式简便解法 - ?
逮荆金喜: 794-198=(800-6)-(200-2)=800-6-200+2=(800-200)-(6-2)=600-4=596
迁西县13089958469: 简算题794 - 198; 6756 - 193 - 207; 72*125; 97*360+3*360. - ?
逮荆金喜:[答案] (1)794-198 =794-200+2 =594+2 =596; (2)6756-193-207 =6756-(193+207) =6756-400 =6356; (3)72*125 =9*8*125 =9*(8*125) =9*1000 =9000; (4)97*360+3*360 =(97+3)*360 =100*360 =36000.
迁西县13089958469: 4年级简便计算?
逮荆金喜: 计算下面各题,怎样简便就怎样计算.(24分)49*102-2*49 125*76*8 8.33-2.43-4.57103*32 6.7+ 2.63+4.3 41000÷8÷1255824÷8*(85-78) 840÷28+70*18794-198 68*256756-193-207 72*12597*360+3*360
迁西县13089958469: 378 - 198怎样简便算 - ?
逮荆金喜: 378-198 =378-200+2 =178+2 =180 你好,本题已解答,如果满意 请点右下角“采纳答案”.