用简便方法计算下面各题，312乘4+188乘4，135乘50乘2，10乘87，25乘33乘4
用简便方法计算下面各题，312乘4+188乘4，135乘50乘2，10乘87，25乘33乘4
312乘4+188乘4
=（312+188）x4
=500x4
=2000
135乘50乘2
=135x(50x2)
=135x100
=13500
10乘87
=10x(90-3)
=10x90-10x3
=900-30
=870
25乘33乘4
=25x4x33
=100x33
=3300
312乘4+188乘4 = = = 简便运算
312*4+188*4
=4*（312+188）
=4*500
=2000
用简便方法计算下面各题。0.45乘1/2+0.5乘1/20+0.05乘50%;
0.45乘1/2+0.5乘1/20+0.05乘50%=1/2（0.45+0.05+0.05）=0.55/2=0.275
312乘4+188乘4等于多少用脱式计算和简便
312×4+188×4
=(312+188)×4
=500×4
=2000
你会用，简便方法计算下面各题吗，360乘52加，480乘36，999乘8加111乘28
你会用，简便方法计算下面各题吗，360乘52加，480乘36
=36x(520+480)
=36x1000
=36000
999乘8加111乘28
=999x8+111x8+111x20
=(999+111)x8+2220
=1000x8+2220
=8000+2220
=10220
用简便方法：312×4+188×4 101×87 135×50×2 25×33×4
312×4+188×4
=4×（312+188）
=4×500
=2000
101×87
=（100+1）×87
=100×87+87
=8700+87
=8787
135×50×2
=135×100
=13500
25×33×4
=100×33
=3300
四年级4乘12乘8乘50简便方法计算
4x12x8x50
=48x400
=50x400-2x400
=20000-800
=19200
250乘43乘4简便方法计算
250x43x4
=250x4x43
=1000x43
=43000
谢谢，请采纳
用简便方法计算下列各题（递等式） 2009乘2082008-2008乘20092009 100+99-98-97+.+4+3-2-1
2009×20082008－2008×20092009 ……………………变一变，就简便
=2009×2008×10001－2008×2009×10001
=0
100+99-98-97+......+4+3-2-1………………每四个数一组得4，一共有100÷4=25（个）4
=4×25
=100
用简便方法计算。 75乘（8+4） 88乘125 125乘（80+4）72乘75 135乘17-35乘17 795-(95-425) 646-(138+146)
75×﹙8+4﹚
=75×8﹢75×4
=600﹢300
=900
88×125
=11×﹙8×125﹚
=11×1000
=11000
125×（80+4）
=125×80﹢125×4
=10000﹢500
=10500
72×75
=9×﹙8×75﹚
=9×600
=5400
135×17-35×17
=﹙135-35﹚×17
=100×17
=1700
795-(95-425)
=795-95+425
=700+425
=1125
646-(138+146)
=646-146-138
=500-138
=362
99×15
=90×15+9×15
=1350+135
=1485
102×23
=100×23+2×23
=2300+46
=2346
39×4×125
=39×﹙4×125﹚
=39×500
=19500
75×19×8
=75×8×19
=600×19
=11400
