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)23.4-8.54-1.46,
=23.4-(8.54+1.46),
=23.4-10,
=13.4;
(2)15.25-3.1+0.75-4.9,
=(15.25+0.75)-(3.1+4.9),
=16-8,
=8;
(3)26×101-26,
=26×(101-1),
=26×100,
=2600;
(4)73+3.4+27+5.6,
=(73+27)+(3.4+5.6),
=100+9,
=109;
(5)363×7+237×7,
=7×(363+237),
=7×600,
=4200;
(6)101×39,
=(100+1)×39,
=100×39+39,
=3939.