题目内容

【题目】用简便方法计算下面各题.

56×101 892×9+108×9

25×67×4 5.12﹣4.5+0.88

【答案】(1)5656 (2)9000 (3)6700 (4)1.5

【解析】

(1)56×101

=56×(100+1)

=56×100+56×1

=5600+56

=5656

(2)892×9+108×9

=(892+108)×9

=1000×9

=9000

(3)25×67×4

=25×4×67

=100×67

=6700

(4)5.12﹣4.5+0.88

=5.12+0.88-4.5

=6-4.5

=1.5

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