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能用简便方法计算的题 用简便方法计算67×53-67×43
用简便方法计算67×53-67×43 用简便方法计算67×53-67×4367×53-67×43=67*(53-43)=67*10=670用简便方法计算出67乘53-67×5367×53-67×53=
用简便方法计算67×53-67×43
用简便方法计算67×53-67×43
67×53-67×43
=67*(53-43)
=67*10
=670
用简便方法计算出67乘53-67×53
67×53-67×53
=(67-67)×53
=0×53
=0
67/68×67用简便方法计算
67/68×67
=67*(68-1)/68
=67*(1-1/68)
=67-67/68
=66又1/68
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147×67-47×67用简便方法计算
147×67-47×67
=67*(147-47)
=67*100
=6700
简便方法计算27*67 67*73
简便方法计算27*67 67*73
27*67 67*73
=67*(27+73)
=67*100
=6700
用简便方法计算67×2.6+67×1.428×(1
(1)
6 7×2.6+
6 7×1.4
=
×(2.6+1.4)
=
×4
=

24 7
(2)28×(
1 7+
3 4)
=28×
+28×
3 4=4+21
=25
67×600用简便方法计算
67×600用简便方法
=(60+7)×600
=60×600+7×600
=36000+4200
=40200
67×12+67×35+67×52+67门用简便方法计算。
67×12+67×35+67×52+67
=67×(12+35+52+1)
=67×100
=6700
115·67一(21-15·67)用简便方法计算
用简便方法计算
115·67一(21+15·67)
=115·67-15.67一21
=100-21
=79
很赞哦! (1097)