问题
解答题
计算下面各题能简算的要简算.
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答案
(1)672-36-64 =672-(36+64) =672-100 =572 (2)26×76+26×24 =26×(76+24) =26×100 =2600 (3)98+265+202 =98+202+265 =300+265 =565 | ||
(4)99×26 =(100-1)×26 =100×26-1×26 =2600-26 =2574 (5)32×125×25 =4×8×125×25 =(4×25)×(8×125) =100×1000 =100000 (6)576-(176+280) =576-176-280 =400-280 =120 | ||
(7)32×101-32 =32×(101-1) =32×100 =3200 (8)89×99+89 =89×(99+1) =89×100 =8900 (9)1050÷15÷7 =1050÷(15×7) =1050÷105 =10 |