1樓:天剎堂題稟卟謉
(1)6.72-2.3÷0.5×
zhi0.8
=6.72-4.6×dao0.8
=6.72-3.68
=3.04;專
(2)屬98
?17+18
?67=(98+18
)-(17+6
7)=54
-1=14;
(3)9
10÷[12×(
65?310
)]=9
10÷[12×9
10]=910
÷920
=910
×209
=2;(4)6.25×0.56+5
8×3.4+5×1
8=0.625×5.6+5
8×3.4+58=5
8×5.6+5
8×3.4+58=5
8×(5.6+3.4+1)=58
×10=254.
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(能簡算的要簡算
5樓:軒胤
(1)6.72-2.3÷0.5×0.8
=6.72-4.6×0.8
=6.72-3.68
=3.04;
(2)98-1
7+18-6
7=(98+1
8)-(17+6
7)=54
-1=14;
(3)9
10÷[1
2×(65-3
10)]
=910
÷[12
×910]=9
10÷9
20=2;
(4)(27+1
5)×7×5=27
×7×5+1
5×7×5
=10+7
=17.
脫式計算(能簡算的要簡算):(1)3.5×0.8+7.5×0.8-80% (2)15÷3+45×
6樓:唄絑恦
(1)3.5×0.8+7.5×0.8-80%,=(3.5+7.5-1)×0.8,
=10×0.8,
=8;(2)1
5÷3+45×1
3,=(15+45
)×13
,=1×13,
=13;(3)20-(3.84+1.21)×0.4,=20-5.05×0.4,
=20-2.02,
=17.98;
(4)35÷[(116-2
3)×6].
=35÷[7
6×6],
=35÷7,=5.
脫式計算(能簡算的要簡算)(1)1.8×2.58+0.5+1.42×1.8(2)(54.7-17.5)×(0.45÷0.9)(3)1.5×
7樓:豆奶
(1)1.8×2.58+0.5+1.42×1.8=1.8×(2.58+1.42)+0.5
=1.8×4+0.5
=7.2+0.5
=7.7;
(2)(54.7-17.5)×(0.45÷0.9)=37.2×0.5
=18.6;
(3)1.5×(0.1÷0.2)-0.18÷0.36=1.5×0.5-0.5
=0.75-0.5
=0.25;
(4)93.6÷[(54.8+45.2)×(6-5.46)]=93.6÷[100×0.54]
=93.6÷54
=1.7? 3.
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