1樓:匿名使用者
(1)5.5×17.3+6.7×5.5
=5.5×(17.3+6.7)
=5.5×24
=132;
(2)1.5×105
=1.5×(100+5)
=1.5×100+1.5×5
=150+7.5
=157.5;
(3)9.07-22.78÷3.4
=9.07-6.7
=2.37;
(4)3.8+4.29+2.1+4.2
=(3.8+4.2)+(4.29+2.1)=8+6.39
=14.39;
(5)2.65×1.7+1.35×1.7
=(2.65+1.35)×
1.7=4×1.7
=6.8;
(6)23.4÷7.8-2.1
=3-2.1
=0.9;
(7)0.75×18÷0.15
=13.5÷0.15
=90;
(8)2.5×3.2×1.25
=2.5×(4×0.8)×1.25
=(2.5×4)×(0.8×1.25)
=10×1
=10;
(9)0.26×2.5+0.74×2.5+2.5=(0.26+0.74+1)×2.5
=2×2.5
=5;(10)18.09-7.5×(0.14+1.06)=18.09-7.5×1.2
=18.09-9
=9.09;
(11)9÷[(38.02+1.98)×0.5]=9÷[40×0.5]
=9÷20
=0.45;
(12)26×20.2-8.4-1.8
=525.2-8.4-1.8
=516.8-1.8
=515;
(13)90-78.09+4.23
=11.91+4.23
=16.14;
(14)32.34÷2.l×0.45
=15.4×0.45
=6.93;
(15)15.32-1.8×5-3.46
=15.32-9-3.46
=6.32-3.46
=2.86;
(16)(9-2.78)×15÷3.11
=6.22×15÷3.11
=93.3÷3.11
=30;
(17)(1.36+4.85)÷(0.15×6)=6.21÷0.9
=6.9;
(18)3.6÷[(1.3+0.6)×5]=3.6÷[1.9×5]
=3.6÷9.5
=3695
;(19)0.01+1.01×99
=0.01+(1+0.01)×99
=0.01+1×99+0.01×99
=0.01×(1+99)+99
=0.01×100+99
=1+99
=100;
(20)89.3×43+38×89.3+893×1.9=89.3×43+38×89.3+89.3×19=89.3×(43+38+19)
=89.3×100
=8930;
(21)10.01×101-10.01
=10.01×(101-1)
=10.01×100
=1001;
(22)38×7.3+27×3.8
=3.8×73+27×3.8
=3.8×(73+27)
=3.8×100
=380;
(23)32×1.25×0.25
=(4×8)×1.25×0.25
=(4×0.25)×(8×1.25)
=1×10
=10;
(24)38.75-(24.5+8.75)=38.75-24.5-8.75
=38.75-8.75-24.5
=30-24.5
=5.5.
脫式計算(能簡算要簡算)?
2樓:妙酒
3.76+4.25+5.75 +12-
3.27-0.73+ 60.
49-36+5.51,『=(4.25+5.
75)+12-(3.27+0.73)-36+(60.
49+5.51)+3.76
=10+12-4-36+66+3.76
=51.76
3樓:老任
解:1 . 3.76+4.25+5.75
=3.76+(4.25+5.75)
=3.76+10
=13.76
2. 12-3.27-0.73
=12-(3.27+0.73)
=12-4
=83. 60.49-36+5.51
=(60.49+5.51)-36
=66-36=30
4樓:原宇衛香旋
(54+9/13)÷9
36÷【
(5/6-1/3)×3】
5/7+8/7÷2
2-6/13÷9/2-2/3
=(54+9/13)×1/9
=36÷2/3
=5/7+4/7
=2-4/39-2/3
=54×1/9+9/13×1/9
=54=9/7
=2-(4/39+2/3)
=6+1/13
=48/39=16/13
=79/13或6
1/13
【3/5-(2/4-2/5)】÷4
=【3/5-1/10】÷4
=1/2÷4
=1/8
希望我答
幫助純手打辛苦~
脫式計算,能簡算要簡算
5樓:之蘿蘿蔔
(1)33.5-5.3-4.7+16.5,=(33.5+16.5)-(5.3+4.7),=50-10,
=40;
(2)9900÷25÷4,
=9900÷(25×4),
=9900÷100,
=99;
(3)1÷(3 5
+310
),=1÷9
10,=10 9
;(4)24×(2 3
+1 6
-3 8
),=24×2 3
+24×1 6
-24×3 8
,=16+4-9,
=20-9,
=11;
(5)1+0.45÷0.9-7 8
,=1+0.5-7 8
,=1.5-7 8
,=0.625;
(6)20
17-(3
17+2 3
),=20 17
-317
-2 3
,=1-2 3
,=1 3.
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