我要小学五年级数学简便算法试题40道快

Question

我要小学五年级数学简便算法试题40道
快

Answer 1

101×82 45.2×10+52.1×10 0.125×3.2×25 4.37×99+4.37 4.2÷2÷3.5 92×25= 22×11+22+288×22=
(214+43+86)+257=
578-53-92-255=
361×40×125=
199×35=
365-(247-235)=
48×125=
200×22= ）（88+104）+96 24+42+76+58
25*5）*2
117*3+117*7 167*2+167*3+167*5 528-53-471、 7.5*3.1/2.5*100
=7.5/2.5*3.1*100
=3*3100
=9300
2、36.5*6.2+28*0.365+3.65
=36.5*6.2+2.8*3.65+3.65
=3.65*（6.2+2.8+1）
=3.65*1.
=36.5
3、999.9*599.9+199.9
=1000×599+0.1×599.9+200-0.1
=5990+59.9+200-0.1
=6049.9+200-0.1
=6249.9-0.1
=6249.8
999.9*599.9+199.9
=(1000-0.1)*599.9+(200-0.1)
=1000*599.9-0.1*599.9+200-0.1
=599900-599.99+200-0.1
=599900-(600-0.1)+200-0.1
=599900-600+0.1+200-0.1
=599900-600+200
=599500
999.9X599.9+199.9
=(1000-0.1)X599.9+(200-0.1)
=1000X599.9-0.1X599.9+200-0.1
=599900-59.99+200-0.1
=599900-(60-0.01)+200-0.1
=599900-60+0.01+200-0.1
=599900+200+0.01-60-0.1
=600039.91
999.9×599.9+199.9
= （1000－0．1）×599.9+199.9
＝1000×599.9－0.1×599.9+199.9
＝599900－59.9+199.9
＝599900＋140
545-167-145
28*225-2*225-6*225
39*8+6*39-39*4
127+133+184+240 22x98+44 54+34+(66+46)
97×95+5×97=