用你喜欢的方法计算,并写出主要的计算过程 (1)6.1+(2.9-0.7)-4.3 (2)125.125×8 (3)
用你喜欢的方法计算,并写出主要的计算过程(1)6.1+(2.9-0.7)-4.3(2)125.125×8(3)(16+27)÷142(4)125×37×8×715(5)(...
用你喜欢的方法计算,并写出主要的计算过程 (1)6.1+(2.9-0.7)-4.3 (2)125.125×8 (3)(16+27)÷142 (4)125×37×8×715 (5)(78-316)×(1-19) (6)(35-63×49)÷711.
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中野梓酱圯
2015-01-05
·
超过54用户采纳过TA的回答
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(1)6.1+(2.9-0.7)-4.3,
=6.1+2.2-4.3,
=4;
(2)125.125×8,
=(125+0.125)×8,
=125×8+0.125×8,
=1000+1,
=1001;
(3)((
+
)÷
,
=(
+
)×42,
=
×42+
×42,
=7+12,
=19;
(4)125×
×8×
,
=(125×8)×(
×
),
=1000×
,
=200,;
(5)(
-
)×(1-
),
=
×
,
=
;
(6)(35-63×
)÷
,
=(35-28)÷
,
=7×
,
=11.
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