问题
解答题
估算.
|
答案
(1)97×6,
≈100×6,
=600;
(2)309×4,
≈300×4,
=1200;
(3)61÷2,
≈60÷2,
=30;
(4)9×59,
≈9×60,
=540;
(5)88÷3,
≈90÷3,
=30;
(6)55÷9,
≈54÷9,
=6.
估算.
|
(1)97×6,
≈100×6,
=600;
(2)309×4,
≈300×4,
=1200;
(3)61÷2,
≈60÷2,
=30;
(4)9×59,
≈9×60,
=540;
(5)88÷3,
≈90÷3,
=30;
(6)55÷9,
≈54÷9,
=6.