问题
解答题
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答案
(1)29.46-(9.46+3.8),
=29.46-9.46-3.8,
=20-3.8,
=16.2;
(2)15.75+0.65-2.75+3.35,
=(15.75-2.75)+(0.65+3.35),
=13+4,
=17;
(3)102×35,
=(100+2)×35,
=100×35+2×35,
=3500+70,
=3570;
(4)85+85×99,
=85×(1+99),
=85×100,
=8500;
(5)65.71-4.99,
=65.71-(5-0.01),
=65.71-5+0.01,
=60.71+0.01,
=60.72;
(6)125×48,
=125×8×6,
=1000×6,
=6000;
(7)360÷45,
=(360÷9)÷(45÷9),
=40÷5,
=8;
(8)(125-30)×8,
=125×8-30×8,
=1000-240,
=760.