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23.4÷7.8-2.1简便计算
23.4÷7.8-2.1
的
简算
?
答:
23.4÷7.8-2.1
=11.7÷3.9-2.1 =3-2.1 =0.9
23.4
/
7.8-2.1
的
简便运算
答:
=3-
2.1
=0.9
简便计算
23.4
除
7.8-2.1
答:
回答:=3-
2.1
=0.9
23.4÷7.8-2.1
的
简算
答:
等于234
÷
78-
2.1
=117÷39-2.1=39÷13-2.1=3-2.1=1.1
23.4÷7.8-2.1
(
脱式计算
)
答:
23.4÷7.8-2.1
=3-2.1 =0.9
脱式计算
,能
简算
的要简算. 2.65×1.7+1.35×1.7
23.4÷
7.
答:
根据题意可得:(1)2.65×1.7+1.35×1.7,=(2.65+1.35)×1.7,=4×1.7,=6.8;(2)
23.4÷7.8-2.1
,=3-2.1,=0.9;(3)0.25×0.8×4×0.125,=(0.25×4)×(0.8×0.125),=1×0.1,=0.1.
23.74-(
7.8
-4.26)
答:
=2.924;②
23.4÷7.8-2.1
,=3-2.1,=0.9;③0.25×13.2×4,=(0.25×4)×13.2,=1×13.2,=13.2;④2.65×1.7+13.5×0.17,=2.65×1.7+1.35×1.7,=(2.65+1.35)×1.7,=4×1.7,=6.8;⑤0.78÷0.25×4,=3.12×4,=12.48;⑥0.8×(3.2...
...1.2×3.5÷1.2×3.5
23.4÷7.8-2.1
89.3×43+38×89.3+19×89.3...
答:
=2.5×1.25×0.4×0.8 =(2.5×0.4)×(1.25×0.8)=1×2 =2 ②1.2×3.5÷1.2×3.5 =(1.2÷1.2)×(3.5×3.5)=1×12.25 =12.25
③23.4÷7.8-2.1 =3-2.1 =0.9
④89.3×43+38×89.3+19×89.3 =89.3×(43+38+19)=89.3×100 =8930 ...
6.8×2.4+3.2×23
答:
(1)2.65×1.7+1.35×1.7 =1.7×(2.65+1.35)=1.7×4 =6.8 (2)
23.4÷7.8-2.1 =3-2.1 =0.9
(3)4.75+3.25×2.4+7.6 =4.75+7.8+7.6 =12.55+7.6 =20.15 (4)11×4.9-4.9 =11×4.9-4.9×1 =4.9×(11-1)=4.9×10 =49 ...
23点4
÷
7点8-2点三
简便运算
?
答:
直接
计算
即可
23.4÷7.8
-2.3 =3-2.3 =0.7
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涓嬩竴椤
灏鹃〉
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