问题
解答题
估算下面各式的结果.
(1)2.68+1.07+3.9+0.8+4.25
(2)0.94×1080
(3)64.28÷7.
答案
(1)2.68+1.07+3.9+0.8+4.25
≈2.7+1.1+3.9++1+4.3
=13;
(2)0.94×1080≈1080;
(3)64.28÷7≈9.
估算下面各式的结果.
(1)2.68+1.07+3.9+0.8+4.25
(2)0.94×1080
(3)64.28÷7.
(1)2.68+1.07+3.9+0.8+4.25
≈2.7+1.1+3.9++1+4.3
=13;
(2)0.94×1080≈1080;
(3)64.28÷7≈9.