递等式计算,能简算的要简算。(1)0.89X10.1,(2)4.56X5.6+5.6X5.44,(
(1)2.01×1.53÷0.18,=3.0753÷0.18,=17.085;(2)5.86×99.4+5.86×0.6,=5.86×(99.4+0.6),=5.86×100,=586;(3)2.2×2.2+2.2×7.8,=2.2×(2.2+7.8),=2.2×10,=22;(4)0.25×(4.83-0.85),=0.25×3.98,=0.25×4-0.25×0.02,=1-0.005,=0.995;(5)(12.5+1.25+0.125)×8,=12.5×8+1.25×8+0.125×8,=100+10+1,=110+1,=111;(6)(148.4-90.85)÷2.5,=57.55÷2.5,=23.02.
解:14.3÷1.1-1.8=(11+3.3)÷1.1-1.8
=10+3-1.8
=10+1.2+1.8-1.8
=11.2
0.76×99=0.76×(100-1)
=76-0.76
=75+1-0.76
=75.24
18.48÷(3.94+4.86)
=18.48÷(4-0.06+4.8+0.06)
=18.48÷8.8
=(18+0.48)÷8.8
=(17.6+0.4+0.48)÷8.8
=(17.6+0.88)÷8.8
=2+0.1
=2.1
(1)0.89X10.1
=0.89×(10+0.1)
=0.89×10+0.89×0.1
=8.9+0.089
=8.989
(2)4.56X5.6+5.6X5.44
=5.6×(4.56+5.44)
=5.6×10
=56
(3)92.8÷8÷1.25
=92.8÷(8×1.25)
=92.8÷10
=9.28
1.
=0.89×10+0.89×0.1
=8.9+0.089
=8.989
2.
=5.6×(4.56+5.44)
=5.6×10
=56
3.
=92.8÷(8×1.25)
=92.8÷10
=9.28
(1)=0.89×(10+0.1)=8.9+0.089=8.989
(2)=5.6×(4.56+5.44)=5.6×10=56
=92.8÷(8×1/8)=92.8÷1=92.8
1,8.989;2,56;3,9.28
8.989,66.584,9.28
①用递等式计算,能简算的要简算。①2.5十2.5x1.5②32.7一1.5×2.7③1...
1:2.5+2.5×1.5=2.5+3.75=6.25 2:2.7-1.5×2.7=2.7-4.05=-1.35 3:1.25×0.6×0.8=1.25×0.8×0.6=1×0.6=0.6
102乘99用的等式运算能简便简算的用简便方法计算
102×99 =(100+2)×(100-1)=100×100-100×1+2×100-2×1 =10000-100+200-2 =10098
2.35ⅹ4.64+2.35递等式计算能简便的就用简便方法?
递等式的计算方式一般是,在一道题中如果只有加减,则从左往右依次计算;如果有加减乘除,则先乘除后加减;如果有括号,则先算括号里的,然后要按照顺序一步一步下下来,最终得出答案。2.35ⅹ4.64+2.35 =2.35X(4.64+1)=2.35X5.64 =13.254。
用递等式计算,能简算的要简·算。0·87x3·36+4·64x0·87,9·5x...
0·87x3·36+4·64x0·87 =0.87×(3.36+4.64)=0.87×8 =6.96 9.5×101 =9.5×(100+1)=9.5×100+9.5×1 =950+9.5 =959.5
用递等式计算(能简便计算的要写出简算过程). 6.5×8+8×3.5 1210÷[56...
(1)6.5×8+8×3.5,=8×(6.5+3.5),=8×10,=80;(2)1210÷[56×( 5 8 - 3 7 )],=1210÷[56× 5 8 -56× 3 7 ],=1210÷[35-24],=1210÷11,=110;(3)1÷2.5+2.5×0.4,=0.4+1,=1.4;(4)168.1÷(4...
3、用递等式计算,能简算的要简算。①2.6×7.8+3.6x2.2②8.9x1.2一7.5...
① 2.6×7.8+3.6×2.2 =2.6×2×3.6+3.6×2.2 =3.6×5.2+3.6×2.2 =3.6×(5.2+2.2)=3.6×7.4 =26.64 ② 8.9×1.2-7.5 =10.68-7.5 =3.18 ③ 4.89×(5.2+6.8)=4.89×12 =58.68 如果不懂,请追问,祝学习愉快!
如果在一个递等式算式里符合简便计算的要求可以普通计算吗
可以普通计算,但会扣分。因为能简算的要尽可能简算。简算是能力的体现,因为普通计算谁都会。
递等式计算。(能简算的要简算)。有三小题。急需啊!~!快。要计算过程,因...
5×十七分之二×3×二十八分之一 =10\/17×3\/28 =15\/238 (六分之五加15%)×24 = 5\/6×24+15%×24 =20+3.6 =23.6 (1-75%)÷(1+四分之一)=1\/4÷5\/4 =1\/5 回答完毕
3.9+4.08+3.92+1.1递等式计算要简算哦
3.9+4.08+3.92+1.1递等式计算 =3.9+1.1+(4.08+3.92)=5+8 =13
2、用递等式计算。(能简算要简算)写过程。
4.67-(2.98+0.67)=4.67-2.98-0.67 =(4.67-0.67)-2.98 =4-2.98 =1.02 73.8x16-73.8x6 =73.8×(16-6)=73.8×10 =738;(5分之4+4分之1)÷3分之7+10分之7 =(16\/20+5\/20)×(3\/7)+7\/10 =(21\/20)×(3\/7)+7\/10 =9\/20+14\/20 =23\/20;(1-4...
郟寇东药:[答案] ①0.125*9*8*0.3,=(0.125*8)*(9*8),=1*72,=72;②4.62÷5÷0.66,=4.62÷(5*0.66),=4.62÷3.3,=1.4;③5.78*2.3+5.78+5.78*6.7,=5.78*(2.3+1+6.7),=5.78*10,=57.8;④7.75*[20÷(3.24...
同安区18330775233: 用递等式计算:(能简算的要简算)(1)21.36÷0.8 - 12.9 (2)15.4*103 - 1.54*30(3)29.61÷9.4*1.4 (4)(16.2 - 0.54)÷1.8. - ?
郟寇东药:[答案] (1)21.36÷0.8-12.9,=26.7-12.9,=13.8;(2)15.4*103-1.54*30,=15.4*103-15.4*3,=15.4*(103-3),=15.4*100,=1540;(3)29.61÷9.4*1.4,=3.15*1.4,=4.41;(4)(16.2-0.54)÷1.8,=15.66÷1.8...
同安区18330775233: 递等式计算,能简算的要简算.①4.8*3.9+6.1*445②18 35 - (2.35+8.6)③320*125 ④1.7+3.98+5310. - ?
郟寇东药:[答案] ①4.8*3.9+6.1*445,=4.8*3.9+6.1*4.8,=4.8*(3.9+6.1),=4.8*10,=48;②1835-(2.35+8.6),=18.6-2.35-8.6,=18.6-8.6-2.35,=10-2.35,=7.65;③320*125,=4*80*125,=4*(80*125),=4*10000,=4...
同安区18330775233: 用递等式计算,能简算的要简算. (1)62.5 - 45÷18*2.5 (2)(7.6 - 3.6÷2)*1.5(3)57*35+512÷53 (4)25*[34 - (712 - 14)] - ?
郟寇东药:[答案] (1)62.5-45÷18*2.5, =62.5-2.5*2.5, =62.5-6.25, =56.25; (2)(7.6-3.6÷2)*1.5, =(7.6-1.8)*1.5, =5.8*1.5, =8.7; (3) 5 7* 3 5+ 5 12÷ 5 3, = 3 7+ 5 12* 3 5, = 3 7+ 1 4, = 19 28; (4) 2 5*[ 3 4-( 7 12- 1 4)], = 2 5*[ 3 4- 1 3], = 2 5* 5 12, = 1 6.
同安区18330775233: 递等式计算(能简算的要简算).(1)2.5*0.8*0.4*12.5(2)6.3*9.9(3)3.93*9.8+0.2*3.93(4)300 - (2.03+6.1)*30(5)(1 - 0.2)*(3 - 2.32)÷0.01(6)8÷[(40.75 - 9.5)*0.4]. - ?
郟寇东药:[答案] (1)2.5*0.8*0.4*12.5, =(2.5*0.4)*(0.8*12.5), =1*10, =10; (2)6.3*9.9, =6.3*(10-0.1), =6.3*10-6.3*0.1, =63-0.63, =62.37; (3)3.93*9.8+0.2*3.93, =3.93*(9.8+0.2), =3.93*10, =39.3; (4)300-(2.03+6.1)*30, =300-8.13*30, =300-243.9, =56.1; (5)(1-0.2)*(3-2.32...
同安区18330775233: 用递等式计算(能简便计算的要简便计算)(1)3300÷(20*33)(2)64*125*25. - ?
郟寇东药:[答案] (1)3300÷(20*33) =3300÷33÷20 =100÷20 =5 (2)64*125*25 =8*4*2*125*25 =(8*125)*(25*4)*2 =1000*100*2 =200000
同安区18330775233: 递等式计算(能简算的要简算).(1)91.2 - 43.68÷7.8(2)1.82*5.7÷0.3(3)8.06*10.1 - 0.1*8.06(4)6÷0.125. - ?
郟寇东药:[答案] (1)91.2-43.68÷7.8, =91.2-5.6, =85.6; (2)1.82*5.7÷0.3, =10.374÷0.3, =34.58; (3)8.06*10.1-0.1*8.06, =8.06*(10.1-0.1), =8.06*10, =80.6; (4)6÷0.125=48.
同安区18330775233: 用递等式计算,能简便的要简便.+++ - ( - )+--++---+ - +. - ?
郟寇东药:[答案] +++ =(+)+(+) =1+1 =2 2-(-) =2-+ =2+ =2 +-- =(+)-(+) =1-1 = ++ =+ =1 --- =(-)-(+) =-1 = +-+ =(-)+(+) =1
同安区18330775233: 用递等式计算.(能简算的要简算)(1)0.78*0.45+0.55*0.78(2)4.12*101 - 4.12(3)(5.36+5.64)÷2.2(4)0.265÷[(0.98+0.02)*0.5]. - ?
郟寇东药:[答案]分析: (1)(2)运用乘法分配律简算; (3)先算括号内的,再算括号外的; (4)先算小括号内的,再算中括号内的,最后算括号外的. (1)0.78*0.45+0.55*0.78, =0.78*(0.45+0.55), =0.78*1, =0.78; (2)4.12*101-4.12, =4.12*(101-1), =4.12*100...
同安区18330775233: 递等式计算.(能简算的要简算)以下三题,4/9÷10/7+5/9*7/10 1/12+3/4*2/3÷2 (1/2 - 5/11)*(5/9+2/13) - ?
郟寇东药:[答案] 4/9÷10/7+5/9*7/10 =(4/9+5/9)*7/10 =1*7/10 =7/10 1/12+3/4*2/3÷2 = 1/12+3/12 =4/12 =1/3 (1/2-5/11)*(5/9+2/13) =1/22*83/117 =83/2574