题目内容
计算
17-(15.7-30.9÷3)
16+(0.32+1.28)÷40.
17-(15.7-30.9÷3)
16+(0.32+1.28)÷40.
(1)17-(15.7-30.9÷3)
=17-(15.7-10.3),
=17-5.4,
=11.6.
(2)16+(0.32+1.28)÷40
=16+1.6÷40,
=16+0.04,
=16.04.
=17-(15.7-10.3),
=17-5.4,
=11.6.
(2)16+(0.32+1.28)÷40
=16+1.6÷40,
=16+0.04,
=16.04.
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