直接写数对又快1÷23×32=4×0.8×2.5×12.5=112×(24?445)÷2.4=6710×121+444÷4099+67×21.2=13419+86
直接写数对又快1÷23×32=4×0.8×2.5×12.5=112×(24?445)÷2.4=6710×121+444÷4099+67×21.2=13419+861519...
直接写数对又快1÷23×32=4×0.8×2.5×12.5=112×(24?445)÷2.4=6710×121+444÷4099+67×21.2=13419+861519×0.25+0.625×861519×0.125=
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小愁eoY
推荐于2016-08-28
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(1)
1÷×,
=
×,
=
;
(2)4×0.8×2.5×12.5,
=(4×2.5)×(0.8×12.5),
=10×10,
=100;
(3)
112×(24?4)÷2.4,
=112×
×
,
=112×(
×
),
=112×8,
=896;
(4)
6×121+444÷+67×21.2,
=6.7×121+67×21.2+444×
,
=67×12.1+67×21.2+444×
,
=67×(12.1+21.2)+11.1×99,
=67×33.3+33.3×33,
=(67+33)×33.3,
=100×33.3,
=3330;
(5)
13+86×0.25+0.625×
86+0.125×86
,
=13
+(0.25+0.625+0.125)×86
,
=13
+1×86
,
=13
+86
,
=100.
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