问题 解答题
估算.
97×6≈309×4≈61÷2≈9×59≈88÷3≈55÷9≈
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.

选择题
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