问题
解答题
估算.
|
答案
(1)496×3,
≈500×3,
=1500;
(2)354÷7,
≈350÷7,
=50;
(3)29×31,
≈30×30,
=900;
(4)712÷9,
≈720÷9,
=80.
估算.
|
(1)496×3,
≈500×3,
=1500;
(2)354÷7,
≈350÷7,
=50;
(3)29×31,
≈30×30,
=900;
(4)712÷9,
≈720÷9,
=80.