计算，能简便的要用简便方法计算．（316+124）×8+2334.7-715+65.3-8151-（16+17）×224÷（13+34-16）0.25×32×12.5

Question

计算，能简便的要用简便方法计算．
（(3)/(16)+(1)/(24)）×8+(2)/(3)                          34.7-(7)/(15)+65.3-(8)/(15)
1-（(1)/(6)+(1)/(7)）×2                            24÷（(1)/(3)+(3)/(4)-(1)/(6)）
0.25×32×12.5                           4.2×0.36+42×6.4%

Answer 1

（1）（(3)/(16)+(1)/(24)）×8+(2)/(3)
=(3)/(16)×8+(1)/(24)×8+(2)/(3)
=(3)/(2)+(1)/(3)+(2)/(3)
=(3)/(2)+（(1)/(3)+(2)/(3)）
=(3)/(2)+1
=2(1)/(2)；

（2）34.7-(7)/(15)+65.3-(8)/(15)
=（34.7+65.3）-（(7)/(15)+(8)/(15)）
=100-1
=99；

（3）1-（(1)/(6)+(1)/(7)）×2
=1-(13)/(42)×2
=1-(13)/(21)
=(8)/(21)；

（4）24÷（(1)/(3)+(3)/(4)-(1)/(6)）
=24÷（(13)/(12)-(1)/(6)）
=24÷(11)/(12)
=(288)/(11)；

（5）0.25×32×12.5
=0.25×（4×8）×12.5
=（0.25×4）×（8×12.5）
=1×100
=100；

（6）4.2×0.36+42×6.4%
=4.2×0.36+4.2×0.64
=4.2×（0.36+0.64）
=4.2×1
=4.2．