问题 解答题
(估算)49×104≈______×______=______(估算)98÷51≈______÷______=______
估算过程:49≈______;104≈______估算过程:98≈______;51≈______.
答案

(1)49×104,

≈50×100,

=5000;

(2)98÷51,

≈100÷50,

=2.

故答案为:50,100,5000,100,50,2,50,100,100,50.

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