17.3 +13.6-7.3 +6.4简便计算
17.3 +13.6-7.3 +6.4简便计算
17.3-7.3+13.6+6.4=10+20=30
37.46+6.4-21.46+13.6简便计算
37.46+6.4-21.46+13.6简便计算
=(37.46-21.46)+(6.4+13.6)
=16+20
=36
13.6+2.82+6.4+1.18简便计算
=(13.6+6.4)+(2.82+1.18)
=20+4
=24
用简便计算17.3加15.6减7.3减3.6
用加法交换律和凑整法组合即可!
关键是学会方法!
原题 17.3+15.6-7.3-3.6
=(17.3-7.3)+(15.6-3.6)
=10+12
=22
也可用拆分法和再组合法
17.3+15.6-7.3-3.6
=(10+7.3-7.3)+(12+3.6-3.6)
=10+12
=22
有疑再问!
32+6.4+6.8-13.6怎么简便计算
32+6.4+6.8-13.6
=(32+6+6-13)+(0.4+0.8-0.6)
=31+0.6
=31.6
4.6*7.8+7.8*6.4-1=(4.6+6.4)*7.8-1=11*7.8-1=10*7.8+7.8-1=78+6.8=84.84.6*7.8+7.8*6.4-1=4.6*7.8+7.8*6.4-7.8+6.8=(4.6+6.4-1)*7.8+6.8=10*7.8+6.8=78+6.8=84.8
58.26-13.6-6.4+1.74 怎么简便计算
58.26-13.6-6.4+1.74
= (58.26+1.74)-(13.6+6.4)
= 60-20
= 40
简便计算:13.6*36 136*6.4怎么做?
中间是加法吧?
13.6X36+136X6.4
=13.6X36+13.6X64
=13.6X(36+64)
=13.6X100
=1360
5.5×17.3+6.4÷3.2怎么计算,可以简便计算吗
5、5x17、3+6、4÷3、2
=(5+0、5)x17、3+2
=5x17、3+0、5x17、3+2
=86、5+8、65+2
=86、5+8、5+0、15+2
=97、15
简便计算13.6+282+6.4+1.18怎么做
简便计算13.6+282+6.4+1.18怎么做
13.6+282+6.4+1.18
=(13.6+6.4)+(2.82+1.18)
=20+4
=24