用你喜欢的方法计算.(写出必要的过程)
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(1)10.7-0.64-0.36,
=10.7-(0.64+0.36),
=10.7-1,
=9.7;
(2)21÷
+21×8 3
,5 8
=21×
+21×3 8
,5 8
=21×(
+3 8
),5 8
=21×1,
=21;
(3)0.25×32×125,
=(0.25×4)×(8×125),
=1×1000,
=1000;
(4)
÷[1-(1 2
+1 3
)],5 9
=
÷[1-1 2
],8 9
=
÷1 2
,1 9
=
.9 2