22×15 3415 ×(57 -314 ÷34 )用简便方法怎么简算
3415 ×(57 -314 ÷34 )用简便方法怎么简算
3415 ×(57 -314 ÷34 )用简便方法怎么简算
3415 ×(57 -314 ÷34 )
=3415×(57-157/17)
=3415×(57×17-157)/17
=3415×812/17
=2772980/17
=163116又8/17.
3415x(57-314/34)能简便的要简便
计算
3415x(57-314/34)
解题 :
3415x(57-314/34)=3415x(57-9+4/17)=3415x48+3415x4/17≈163920+803.53=164723.53 。

43×34加57×34用简便方法计算
43×34加57×34用简便方法计算
43×34+57×34
=34*(43+57)
=34*100
=3400
用简便方法计算19*34+22*57
用简便方法计算19*34+22*57
解:根据提取公因式的简便方法,
原式=19x34+22x3x19
=19x(34+66)
=19x100
=1900
34×57-432÷12 用简便方法计算 急~
34×57-432÷12
=3×(34×19-144÷12)
=3×(34×19-12×12÷12)
=3×(34×19-12)
=3×2(17×19-6)
=6×317
=1902
用递等式计算,能简算的要用简便方法计算.84.67-(24.67+15.3)1.25×3.214+34÷14+3415÷1
(1)84.67-(24.67+15.3),
=84.67-24.67-15.3,
=(84.67-24.67)-15.3,
=60-15.3,
=44.7;
(2)1.25×3.2,
=1.25×8×0.4,
=(1.25×8)×0.4,
=10×0.4,
=4;
(3)
1 4+
3 4÷
1 4+
3 4,
=(
+
3 4)+
3 4×4,
=1+3,
=4;
(4)
1 5÷13+
4 5×
1 13,
=
×
1 13+
4 5×
1 13,
=(
+
4 5)×
1 13,
=1×
,
=
.
32 57*68*57用简便方法怎么算?
32 *57+68*57用简便方法怎么算?
32*57+68*57
=57*(32+68)
=57*100
=5700
简算43+77X99+34的简便方法怎么计算
=(43+34)+77×99
=77+77×99
=77×(1+99)
=77×100
=7700
99*57用简便方法怎么算
99*57
=(100-1)*57
=5700-57
=5643
137乘34 803乘57 87乘23运用简便方法怎么算
137乘34 803乘57 87乘23运用简便方法怎么算
137乘34 803乘57 87乘23
=4658+45771+2001
=
52430
直接计算