6/8╳33 66╳37.5%十0.375怎样简算
6/8╳33 66╳37.5%十0.375怎样简算
6/8╳33+ 66╳37.5%十0.375怎样简算
=0.375×66+66×0.375+0.375
=0.375×(66+66+1)
=0.375×133
=49.875
66*0.88+33*0.24怎样简算
晕,这都可以口算了,不用简算了吧?
实在不行改成33(2*0.88+0.24)不知道算不算,反正口算的时候是这么算的。
2.375+66/7+(55/8-56/7)怎样简算
2.375+66/7+(55/8-56/7)
=(2.375+55/8)+(66/7-56/7)
=2又3/8+6又7/8+10/7
=9又1/4+1又3/7
=9又7/28+1又12/28
=10又19/28
22×14+33×15+66×7怎样简算
22×14+33×15+66×7
=2*11*14+3*11*15+6*11*7
=11*28+11*45+11*42
=11*(28+45+42)
=11*(100+10+5)
=1100+110+55
=1265
()/8=21:()=0.375=12:()=()%=6/()
括号依次为:
3 56 4.5 37.5% 16
1.5-5/6+2.75+0.375-14/3简算
1.5-5/6+2.75+0.375-14/3
=(1.5+2.75+0.375)-(5/6+14/3)
=4.625-5.5
=-0.875
(5/8十37.5%)÷(2l/10一2o9%)简算
(5/8十37.5%)÷(2l/10一2o9%)简算
(5/8十37.5%)÷(2l/10一2o9%)
=(5/8+3/8)÷(2.1-2.09)
=1÷0.01
=100
3×6+33×66+333×666=简算
3×6+3×11×6×11+3×111×6×111=18×1+18×11×11+18×111×111=(121+12321+1)×18=223974
18.6―(0.2+5.2)6/1.5简算
18.6-(0.2+5.2)+6÷1.5
=18.6-5.4+4
=13.2+4
=17.2
7.2×6/17加7.2×11/17简算
7.2×6/17加7.2×11/17
=7.2×(6/17+11/17)
=7.2×1
=7.2。
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