计算下面各题,能简算的用简算1.1785÷17+982.﹙3.2+6.8÷0.17﹚×2.53.1.7×4.8+5.2×1.74.8.3+1.9-5.3+4.6

问题描述:

计算下面各题,能简算的用简算
1.1785÷17+98
2.﹙3.2+6.8÷0.17﹚×2.5
3.1.7×4.8+5.2×1.7
4.8.3+1.9-5.3+4.6

(1又4分之1+3又5分之2+4.75+1又5分之3)÷19分之11
=(1.25+4.75+5)×19/11
=(6+5)×19/11
=19
11分之4×8分之1+0.125×2又11分之7-0.125
=4/11×0.125+0.125×29/44-0.125
=0.125×(4/11+29/11-1)
=0.125×2
=0.25

0.54×【0.2+15.6÷(1.35-0.6)】
=0.54×(0.2+15.6÷0.75)
=0.54×(0.2+20.8)
=0.54×21
=0.54×(20+1)
=10.8+0.54
=11.34

4又6分之1-【4.3-(5分之3+2.4÷2又3分之2)】×1又4分之1
=4又6分之1-(4+3/10-5分之3-2.4×8分之3)×1又4分之1
=4又6分之1-(4+3/10-6/10-9/10)×5/4
=4又6分之1-(4-12/10)×5/4
=4又6分之1-5+3/2
=1/6+1/2
=2/3
这样可以么?

1.1785÷17+98=105+100-2=2032.﹙3.2+6.8÷0.17﹚×2.5=(3.2+40)×2.5=3.2×2.5+40×2.5=8+100=1083.1.7×4.8+5.2×1.7=1.7×(4.8+5.2)=1.7×10=174.8.3+1.9-5.3+4.6=(8.3-5.3)+(1.9+4.6)=3+6.5=9.5...