题目内容
【题目】计算下面各题,能简算的要简算.
(1)1024﹣384÷16×13
(2)73×0.125+27×12.5%
(3)0.78×96﹣0.78+0.78×5
(4)10000÷125÷25÷8÷4
(5)÷2015
(6)+ + + +
【答案】(1)712 (2)12.5 (3)78 (4)0.1 (5) (6)
【解析】
(1)先算除法,再算乘法,最后算减法;(2)(3)根据乘法分配律简算;(4)根据除法的性质简算;(5)先把带分数化成假分数,再根据分数除法的计算方法和乘法分配律进行变形、约分从而得解;(6) = ﹣ , = ﹣ , = ﹣ , = ﹣ , = ﹣ ,由此把各个加数拆分,再相互抵消,从而求解.
(1) 1024﹣384÷16×13
=1024﹣24×13
=1024﹣312
=712
(2)73×0.125+27×12.5%
=(73+27)×0.125
=100×0.125
=12.5
(3)0.78×96﹣0.78+0.78×5
=0.78×(96﹣1+5)
=0.78×100
=78
(4)10000÷125÷25÷8÷4
=10000÷(125×8)÷(25×4)
=10000÷1000÷100
=10÷100
=0.1
(5) ÷2015
= ×
=
=
=
(6) + + + +
=( ﹣ )+( ﹣ )+( ﹣ )+( ﹣ )+( ﹣ )
= ﹣ + ﹣ + ﹣ + ﹣ + ﹣
= ﹣
=
练习册系列答案
相关题目